diff options
author | Paul Gardiner <paulg.artifex@glidos.net> | 2013-07-22 11:09:22 +0100 |
---|---|---|
committer | Paul Gardiner <paulg.artifex@glidos.net> | 2013-07-22 11:11:46 +0100 |
commit | 15b9cdd84caf784abeb911ca7aaf1d317d201e88 (patch) | |
tree | c00b6469e77734967e74bfef80a9bd8b902b0054 | |
parent | 9371668e28e5063ae42b8cd1906f27ee7b33379e (diff) | |
download | mupdf-15b9cdd84caf784abeb911ca7aaf1d317d201e88.tar.xz |
Collect together all code to do with appearance-stream creation
-rw-r--r-- | include/mupdf/pdf.h | 1 | ||||
-rw-r--r-- | include/mupdf/pdf/annot.h | 13 | ||||
-rw-r--r-- | include/mupdf/pdf/appearance.h | 35 | ||||
-rw-r--r-- | platform/win32/libmupdf.vcproj | 8 | ||||
-rw-r--r-- | source/pdf/pdf-annot.c | 309 | ||||
-rw-r--r-- | source/pdf/pdf-appearance.c | 1634 | ||||
-rw-r--r-- | source/pdf/pdf-form.c | 1346 |
7 files changed, 1687 insertions, 1659 deletions
diff --git a/include/mupdf/pdf.h b/include/mupdf/pdf.h index c2e069a9..976aaa07 100644 --- a/include/mupdf/pdf.h +++ b/include/mupdf/pdf.h @@ -17,6 +17,7 @@ #include "mupdf/pdf/annot.h" #include "mupdf/pdf/field.h" #include "mupdf/pdf/widget.h" +#include "mupdf/pdf/appearance.h" #include "mupdf/pdf/event.h" #include "mupdf/pdf/javascript.h" diff --git a/include/mupdf/pdf/annot.h b/include/mupdf/pdf/annot.h index 77066569..b0086773 100644 --- a/include/mupdf/pdf/annot.h +++ b/include/mupdf/pdf/annot.h @@ -81,28 +81,15 @@ pdf_annot *pdf_create_annot(pdf_document *doc, pdf_page *page, fz_annot_type typ void pdf_delete_annot(pdf_document *doc, pdf_page *page, pdf_annot *annot); /* - pdf_set_annot_appearance: update the appearance of an annotation based - on a display list. -*/ -void pdf_set_annot_appearance(pdf_document *doc, pdf_annot *annot, fz_rect *rect, fz_display_list *disp_list); - -/* pdf_set_markup_annot_quadpoints: set the quadpoints for a text-markup annotation. */ void pdf_set_markup_annot_quadpoints(pdf_document *doc, pdf_annot *annot, fz_point *qp, int n); /* - fz_set_markup_appearance: set the appearance stream of a text markup annotations, basing it on - its QuadPoints array -*/ -void pdf_set_markup_appearance(pdf_document *doc, pdf_annot *annot, float color[3], float alpha, float line_thickness, float line_height); - -/* fz_set_ink_annot_list: set the details of an ink annotation. All the points of the multiple arcs are carried in a single array, with the counts for each arc held in a secondary array. */ void pdf_set_ink_annot_list(pdf_document *doc, pdf_annot *annot, fz_point *pts, int *counts, int ncount, float color[3], float thickness); -void pdf_set_ink_appearance(pdf_document *doc, pdf_annot *annot); fz_annot_type pdf_annot_obj_type(pdf_obj *obj); diff --git a/include/mupdf/pdf/appearance.h b/include/mupdf/pdf/appearance.h new file mode 100644 index 00000000..ead8bfa5 --- /dev/null +++ b/include/mupdf/pdf/appearance.h @@ -0,0 +1,35 @@ +#ifndef MUPDF_PDF_APPEARANCE_H +#define MUPDF_PDF_APPEARANCE_H + +typedef struct pdf_da_info_s +{ + char *font_name; + int font_size; + float col[4]; + int col_size; +} pdf_da_info; + +void pdf_da_info_fin(fz_context *ctx, pdf_da_info *di); +void pdf_parse_da(fz_context *ctx, char *da, pdf_da_info *di); +void pdf_fzbuf_print_da(fz_context *ctx, fz_buffer *fzbuf, pdf_da_info *di); + +void pdf_update_text_appearance(pdf_document *doc, pdf_obj *obj, char *eventValue); +void pdf_update_combobox_appearance(pdf_document *doc, pdf_obj *obj); +void pdf_update_pushbutton_appearance(pdf_document *doc, pdf_obj *obj); +void pdf_update_text_markup_appearance(pdf_document *doc, pdf_annot *annot, fz_annot_type type); + +/* + pdf_set_annot_appearance: update the appearance of an annotation based + on a display list. +*/ +void pdf_set_annot_appearance(pdf_document *doc, pdf_annot *annot, fz_rect *rect, fz_display_list *disp_list); + +/* + fz_set_markup_appearance: set the appearance stream of a text markup annotations, basing it on + its QuadPoints array +*/ +void pdf_set_markup_appearance(pdf_document *doc, pdf_annot *annot, float color[3], float alpha, float line_thickness, float line_height); + +void pdf_set_ink_appearance(pdf_document *doc, pdf_annot *annot); + +#endif diff --git a/platform/win32/libmupdf.vcproj b/platform/win32/libmupdf.vcproj index 0fdfd672..434c6a5a 100644 --- a/platform/win32/libmupdf.vcproj +++ b/platform/win32/libmupdf.vcproj @@ -690,6 +690,10 @@ > </File> <File + RelativePath="..\..\source\pdf\pdf-appearance.c" + > + </File> + <File RelativePath="..\..\source\pdf\pdf-cmap-load.c" > </File> @@ -873,6 +877,10 @@ > </File> <File + RelativePath="..\..\include\mupdf\pdf\appearance.h" + > + </File> + <File RelativePath="..\..\include\mupdf\pdf\cmap.h" > </File> diff --git a/source/pdf/pdf-annot.c b/source/pdf/pdf-annot.c index 4c76fce9..991478f6 100644 --- a/source/pdf/pdf-annot.c +++ b/source/pdf/pdf-annot.c @@ -1,6 +1,5 @@ #include "mupdf/pdf.h" -#define SMALL_FLOAT (0.00001) static pdf_obj * resolve_dest_rec(pdf_document *doc, pdf_obj *dest, int depth) @@ -841,63 +840,6 @@ pdf_delete_annot(pdf_document *doc, pdf_page *page, pdf_annot *annot) doc->dirty = 1; } -static fz_colorspace *pdf_to_color(pdf_document *doc, pdf_obj *col, float color[4]) -{ - fz_colorspace *cs; - int i, ncol = pdf_array_len(col); - - switch (ncol) - { - case 1: cs = fz_device_gray(doc->ctx); break; - case 3: cs = fz_device_rgb(doc->ctx); break; - case 4: cs = fz_device_cmyk(doc->ctx); break; - default: return NULL; - } - - for (i = 0; i < ncol; i++) - color[i] = pdf_to_real(pdf_array_get(col, i)); - - return cs; -} - -static fz_point * -quadpoints(pdf_document *doc, pdf_obj *annot, int *nout) -{ - fz_context *ctx = doc->ctx; - pdf_obj *quad = pdf_dict_gets(annot, "QuadPoints"); - fz_point *qp = NULL; - int i, n; - - if (!quad) - return NULL; - - n = pdf_array_len(quad); - - if (n%8 != 0) - return NULL; - - fz_var(qp); - fz_try(ctx) - { - qp = fz_malloc_array(ctx, n/2, sizeof(fz_point)); - - for (i = 0; i < n; i += 2) - { - qp[i/2].x = pdf_to_real(pdf_array_get(quad, i)); - qp[i/2].y = pdf_to_real(pdf_array_get(quad, i+1)); - } - } - fz_catch(ctx) - { - fz_free(ctx, qp); - fz_rethrow(ctx); - } - - *nout = n/2; - - return qp; -} - void pdf_set_markup_annot_quadpoints(pdf_document *doc, pdf_annot *annot, fz_point *qp, int n) { @@ -985,254 +927,3 @@ pdf_set_ink_annot_list(pdf_document *doc, pdf_annot *annot, fz_point *pts, int * for (i = 0; i < 3; i++) pdf_array_push_drop(col, pdf_new_real(doc, color[i])); } - -void -pdf_set_annot_appearance(pdf_document *doc, pdf_annot *annot, fz_rect *rect, fz_display_list *disp_list) -{ - fz_context *ctx = doc->ctx; - pdf_obj *obj = annot->obj; - const fz_matrix *page_ctm = &annot->page->ctm; - fz_matrix ctm; - fz_matrix mat = fz_identity; - fz_device *dev = NULL; - pdf_xobject *xobj = NULL; - - fz_invert_matrix(&ctm, page_ctm); - - fz_var(dev); - fz_try(ctx) - { - pdf_obj *ap_obj; - fz_rect trect = *rect; - - fz_transform_rect(&trect, &ctm); - - pdf_dict_puts_drop(obj, "Rect", pdf_new_rect(doc, &trect)); - - /* See if there is a current normal appearance */ - ap_obj = pdf_dict_getp(obj, "AP/N"); - if (!pdf_is_stream(doc, pdf_to_num(ap_obj), pdf_to_gen(ap_obj))) - ap_obj = NULL; - - if (ap_obj == NULL) - { - ap_obj = pdf_new_xobject(doc, &trect, &mat); - pdf_dict_putp_drop(obj, "AP/N", ap_obj); - } - else - { - pdf_xref_ensure_incremental_object(doc, pdf_to_num(ap_obj)); - pdf_dict_puts_drop(ap_obj, "Rect", pdf_new_rect(doc, &trect)); - pdf_dict_puts_drop(ap_obj, "Matrix", pdf_new_matrix(doc, &mat)); - } - - dev = pdf_new_pdf_device(doc, ap_obj, pdf_dict_gets(ap_obj, "Resources"), &mat); - fz_run_display_list(disp_list, dev, &ctm, &fz_infinite_rect, NULL); - fz_free_device(dev); - - /* Mark the appearance as changed - required for partial update */ - xobj = pdf_load_xobject(doc, ap_obj); - if (xobj) - { - xobj->iteration++; - pdf_drop_xobject(ctx, xobj); - } - - doc->dirty = 1; - - update_rect(ctx, annot); - } - fz_catch(ctx) - { - fz_free_device(dev); - fz_rethrow(ctx); - } -} - -void -pdf_set_markup_appearance(pdf_document *doc, pdf_annot *annot, float color[3], float alpha, float line_thickness, float line_height) -{ - fz_context *ctx = doc->ctx; - const fz_matrix *page_ctm = &annot->page->ctm; - fz_path *path = NULL; - fz_stroke_state *stroke = NULL; - fz_device *dev = NULL; - fz_display_list *strike_list = NULL; - int i, n; - fz_point *qp = quadpoints(doc, annot->obj, &n); - - if (!qp || n <= 0) - return; - - fz_var(path); - fz_var(stroke); - fz_var(dev); - fz_var(strike_list); - fz_try(ctx) - { - fz_rect rect = fz_empty_rect; - - rect.x0 = rect.x1 = qp[0].x; - rect.y0 = rect.y1 = qp[0].y; - for (i = 0; i < n; i++) - fz_include_point_in_rect(&rect, &qp[i]); - - strike_list = fz_new_display_list(ctx); - dev = fz_new_list_device(ctx, strike_list); - - for (i = 0; i < n; i += 4) - { - fz_point pt0 = qp[i]; - fz_point pt1 = qp[i+1]; - fz_point up; - float thickness; - - up.x = qp[i+2].x - qp[i+1].x; - up.y = qp[i+2].y - qp[i+1].y; - - pt0.x += line_height * up.x; - pt0.y += line_height * up.y; - pt1.x += line_height * up.x; - pt1.y += line_height * up.y; - - thickness = sqrtf(up.x * up.x + up.y * up.y) * line_thickness; - - if (!stroke || fz_abs(stroke->linewidth - thickness) < SMALL_FLOAT) - { - if (stroke) - { - // assert(path) - fz_stroke_path(dev, path, stroke, page_ctm, fz_device_rgb(ctx), color, alpha); - fz_drop_stroke_state(ctx, stroke); - stroke = NULL; - fz_free_path(ctx, path); - path = NULL; - } - - stroke = fz_new_stroke_state(ctx); - stroke->linewidth = thickness; - path = fz_new_path(ctx); - } - - fz_moveto(ctx, path, pt0.x, pt0.y); - fz_lineto(ctx, path, pt1.x, pt1.y); - } - - if (stroke) - { - fz_stroke_path(dev, path, stroke, page_ctm, fz_device_rgb(ctx), color, alpha); - } - - fz_transform_rect(&rect, page_ctm); - pdf_set_annot_appearance(doc, annot, &rect, strike_list); - } - fz_always(ctx) - { - fz_free(ctx, qp); - fz_free_device(dev); - fz_drop_stroke_state(ctx, stroke); - fz_free_path(ctx, path); - fz_drop_display_list(ctx, strike_list); - } - fz_catch(ctx) - { - fz_rethrow(ctx); - } -} - -void -pdf_set_ink_appearance(pdf_document *doc, pdf_annot *annot) -{ - fz_context *ctx = doc->ctx; - const fz_matrix *page_ctm = &annot->page->ctm; - fz_path *path = NULL; - fz_stroke_state *stroke = NULL; - fz_device *dev = NULL; - fz_display_list *strike_list = NULL; - - fz_var(path); - fz_var(stroke); - fz_var(dev); - fz_var(strike_list); - fz_try(ctx) - { - fz_rect rect = fz_empty_rect; - fz_colorspace *cs; - float color[4]; - float width; - pdf_obj *list; - int n, m, i, j; - - cs = pdf_to_color(doc, pdf_dict_gets(annot->obj, "C"), color); - if (!cs) - { - cs = fz_device_rgb(ctx); - color[0] = 1.0f; - color[1] = 0.0f; - color[2] = 0.0f; - } - - width = pdf_to_real(pdf_dict_gets(pdf_dict_gets(annot->obj, "BS"), "W")); - if (width == 0.0f) - width = 1.0f; - - list = pdf_dict_gets(annot->obj, "InkList"); - - n = pdf_array_len(list); - - strike_list = fz_new_display_list(ctx); - dev = fz_new_list_device(ctx, strike_list); - path = fz_new_path(ctx); - stroke = fz_new_stroke_state(ctx); - stroke->linewidth = width; - - for (i = 0; i < n; i ++) - { - fz_point pt_last; - pdf_obj *arc = pdf_array_get(list, i); - m = pdf_array_len(arc); - - for (j = 0; j < m-1; j += 2) - { - fz_point pt; - pt.x = pdf_to_real(pdf_array_get(arc, j)); - pt.y = pdf_to_real(pdf_array_get(arc, j+1)); - - if (i == 0 && j == 0) - { - rect.x0 = rect.x1 = pt.x; - rect.y0 = rect.y1 = pt.y; - } - else - { - fz_include_point_in_rect(&rect, &pt); - } - - if (j == 0) - fz_moveto(ctx, path, pt.x, pt.y); - else - fz_curvetov(ctx, path, pt_last.x, pt_last.y, (pt.x + pt_last.x) / 2, (pt.y + pt_last.y) / 2); - pt_last = pt; - } - fz_lineto(ctx, path, pt_last.x, pt_last.y); - } - - fz_stroke_path(dev, path, stroke, page_ctm, cs, color, 1.0f); - - fz_expand_rect(&rect, width); - - fz_transform_rect(&rect, page_ctm); - pdf_set_annot_appearance(doc, annot, &rect, strike_list); - } - fz_always(ctx) - { - fz_free_device(dev); - fz_drop_stroke_state(ctx, stroke); - fz_free_path(ctx, path); - fz_drop_display_list(ctx, strike_list); - } - fz_catch(ctx) - { - fz_rethrow(ctx); - } -} diff --git a/source/pdf/pdf-appearance.c b/source/pdf/pdf-appearance.c new file mode 100644 index 00000000..ffddddc6 --- /dev/null +++ b/source/pdf/pdf-appearance.c @@ -0,0 +1,1634 @@ +#include "mupdf/pdf.h" + +#define MATRIX_COEFS (6) +#define STRIKE_HEIGHT (0.375f) +#define UNDERLINE_HEIGHT (0.075f) +#define LINE_THICKNESS (0.07f) +#define SMALL_FLOAT (0.00001) + +enum +{ + Q_Left = 0, + Q_Cent = 1, + Q_Right = 2 +}; + +enum +{ + BS_Solid, + BS_Dashed, + BS_Beveled, + BS_Inset, + BS_Underline +}; + +typedef struct font_info_s +{ + pdf_da_info da_rec; + pdf_font_desc *font; +} font_info; + +typedef struct text_widget_info_s +{ + pdf_obj *dr; + pdf_obj *col; + font_info font_rec; + int q; + int multiline; + int comb; + int max_len; +} text_widget_info; + +static const char *fmt_re = "%f %f %f %f re\n"; +static const char *fmt_f = "f\n"; +static const char *fmt_s = "s\n"; +static const char *fmt_g = "%f g\n"; +static const char *fmt_m = "%f %f m\n"; +static const char *fmt_l = "%f %f l\n"; +static const char *fmt_w = "%f w\n"; +static const char *fmt_Tx_BMC = "/Tx BMC\n"; +static const char *fmt_q = "q\n"; +static const char *fmt_W = "W\n"; +static const char *fmt_n = "n\n"; +static const char *fmt_BT = "BT\n"; +static const char *fmt_Tm = "%1.2f %1.2f %1.2f %1.2f %1.2f %1.2f Tm\n"; +static const char *fmt_Td = "%f %f Td\n"; +static const char *fmt_Tj = " Tj\n"; +static const char *fmt_ET = "ET\n"; +static const char *fmt_Q = "Q\n"; +static const char *fmt_EMC = "EMC\n"; + +void pdf_da_info_fin(fz_context *ctx, pdf_da_info *di) +{ + fz_free(ctx, di->font_name); + di->font_name = NULL; +} + +static void da_check_stack(float *stack, int *top) +{ + if (*top == 32) + { + memmove(stack, stack + 1, 31 * sizeof(stack[0])); + *top = 31; + } +} + +void pdf_parse_da(fz_context *ctx, char *da, pdf_da_info *di) +{ + float stack[32]; + int top = 0; + pdf_token tok; + char *name = NULL; + pdf_lexbuf lbuf; + fz_stream *str = fz_open_memory(ctx, (unsigned char *)da, strlen(da)); + + pdf_lexbuf_init(ctx, &lbuf, PDF_LEXBUF_SMALL); + + fz_var(str); + fz_var(name); + fz_try(ctx) + { + for (tok = pdf_lex(str, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str, &lbuf)) + { + switch (tok) + { + case PDF_TOK_NAME: + fz_free(ctx, name); + name = fz_strdup(ctx, lbuf.scratch); + break; + + case PDF_TOK_INT: + da_check_stack(stack, &top); + stack[top] = lbuf.i; + top ++; + break; + + case PDF_TOK_REAL: + da_check_stack(stack, &top); + stack[top] = lbuf.f; + top ++; + break; + + case PDF_TOK_KEYWORD: + if (!strcmp(lbuf.scratch, "Tf")) + { + di->font_size = stack[0]; + di->font_name = name; + name = NULL; + } + else if (!strcmp(lbuf.scratch, "rg")) + { + di->col[0] = stack[0]; + di->col[1] = stack[1]; + di->col[2] = stack[2]; + di->col_size = 3; + } + + fz_free(ctx, name); + name = NULL; + top = 0; + break; + + default: + break; + } + } + } + fz_always(ctx) + { + fz_free(ctx, name); + fz_close(str); + pdf_lexbuf_fin(&lbuf); + } + fz_catch(ctx) + { + fz_rethrow(ctx); + } +} + +static void get_font_info(pdf_document *doc, pdf_obj *dr, char *da, font_info *font_rec) +{ + fz_context *ctx = doc->ctx; + + pdf_parse_da(ctx, da, &font_rec->da_rec); + if (font_rec->da_rec.font_name == NULL) + fz_throw(ctx, FZ_ERROR_GENERIC, "No font name in default appearance"); + font_rec->font = pdf_load_font(doc, dr, pdf_dict_gets(pdf_dict_gets(dr, "Font"), font_rec->da_rec.font_name), 0); +} + +static void font_info_fin(fz_context *ctx, font_info *font_rec) +{ + pdf_drop_font(ctx, font_rec->font); + font_rec->font = NULL; + pdf_da_info_fin(ctx, &font_rec->da_rec); +} + +static void get_text_widget_info(pdf_document *doc, pdf_obj *widget, text_widget_info *info) +{ + char *da = pdf_to_str_buf(pdf_get_inheritable(doc, widget, "DA")); + int ff = pdf_get_field_flags(doc, widget); + pdf_obj *ml = pdf_get_inheritable(doc, widget, "MaxLen"); + + info->dr = pdf_get_inheritable(doc, widget, "DR"); + info->col = pdf_dict_getp(widget, "MK/BG"); + info->q = pdf_to_int(pdf_get_inheritable(doc, widget, "Q")); + info->multiline = (ff & Ff_Multiline) != 0; + info->comb = (ff & (Ff_Multiline|Ff_Password|Ff_FileSelect|Ff_Comb)) == Ff_Comb; + + if (ml == NULL) + info->comb = 0; + else + info->max_len = pdf_to_int(ml); + + get_font_info(doc, info->dr, da, &info->font_rec); +} + +void pdf_fzbuf_print_da(fz_context *ctx, fz_buffer *fzbuf, pdf_da_info *di) +{ + if (di->font_name != NULL && di->font_size != 0) + fz_buffer_printf(ctx, fzbuf, "/%s %d Tf", di->font_name, di->font_size); + + switch (di->col_size) + { + case 1: + fz_buffer_printf(ctx, fzbuf, " %f g", di->col[0]); + break; + + case 3: + fz_buffer_printf(ctx, fzbuf, " %f %f %f rg", di->col[0], di->col[1], di->col[2]); + break; + + case 4: + fz_buffer_printf(ctx, fzbuf, " %f %f %f %f k", di->col[0], di->col[1], di->col[2], di->col[3]); + break; + + default: + fz_buffer_printf(ctx, fzbuf, " 0 g"); + break; + } +} + +static fz_rect *measure_text(pdf_document *doc, font_info *font_rec, const fz_matrix *tm, char *text, fz_rect *bbox) +{ + pdf_measure_text(doc->ctx, font_rec->font, (unsigned char *)text, strlen(text), bbox); + + bbox->x0 *= font_rec->da_rec.font_size * tm->a; + bbox->y0 *= font_rec->da_rec.font_size * tm->d; + bbox->x1 *= font_rec->da_rec.font_size * tm->a; + bbox->y1 *= font_rec->da_rec.font_size * tm->d; + + return bbox; +} + +static void fzbuf_print_color(fz_context *ctx, fz_buffer *fzbuf, pdf_obj *arr, int stroke, float adj) +{ + switch (pdf_array_len(arr)) + { + case 1: + fz_buffer_printf(ctx, fzbuf, stroke?"%f G\n":"%f g\n", + pdf_to_real(pdf_array_get(arr, 0)) + adj); + break; + case 3: + fz_buffer_printf(ctx, fzbuf, stroke?"%f %f %f RG\n":"%f %f %f rg\n", + pdf_to_real(pdf_array_get(arr, 0)) + adj, + pdf_to_real(pdf_array_get(arr, 1)) + adj, + pdf_to_real(pdf_array_get(arr, 2)) + adj); + break; + case 4: + fz_buffer_printf(ctx, fzbuf, stroke?"%f %f %f %f K\n":"%f %f %f %f k\n", + pdf_to_real(pdf_array_get(arr, 0)), + pdf_to_real(pdf_array_get(arr, 1)), + pdf_to_real(pdf_array_get(arr, 2)), + pdf_to_real(pdf_array_get(arr, 3))); + break; + } +} + +static void fzbuf_print_text(fz_context *ctx, fz_buffer *fzbuf, const fz_rect *clip, pdf_obj *col, font_info *font_rec, const fz_matrix *tm, char *text) +{ + fz_buffer_printf(ctx, fzbuf, fmt_q); + if (clip) + { + fz_buffer_printf(ctx, fzbuf, fmt_re, clip->x0, clip->y0, clip->x1 - clip->x0, clip->y1 - clip->y0); + fz_buffer_printf(ctx, fzbuf, fmt_W); + if (col) + { + fzbuf_print_color(ctx, fzbuf, col, 0, 0.0); + fz_buffer_printf(ctx, fzbuf, fmt_f); + } + else + { + fz_buffer_printf(ctx, fzbuf, fmt_n); + } + } + + fz_buffer_printf(ctx, fzbuf, fmt_BT); + + pdf_fzbuf_print_da(ctx, fzbuf, &font_rec->da_rec); + + fz_buffer_printf(ctx, fzbuf, "\n"); + if (tm) + fz_buffer_printf(ctx, fzbuf, fmt_Tm, tm->a, tm->b, tm->c, tm->d, tm->e, tm->f); + + fz_buffer_cat_pdf_string(ctx, fzbuf, text); + fz_buffer_printf(ctx, fzbuf, fmt_Tj); + fz_buffer_printf(ctx, fzbuf, fmt_ET); + fz_buffer_printf(ctx, fzbuf, fmt_Q); +} + +static fz_buffer *create_text_buffer(fz_context *ctx, const fz_rect *clip, text_widget_info *info, const fz_matrix *tm, char *text) +{ + fz_buffer *fzbuf = fz_new_buffer(ctx, 0); + + fz_try(ctx) + { + fz_buffer_printf(ctx, fzbuf, fmt_Tx_BMC); + fzbuf_print_text(ctx, fzbuf, clip, info->col, &info->font_rec, tm, text); + fz_buffer_printf(ctx, fzbuf, fmt_EMC); + } + fz_catch(ctx) + { + fz_drop_buffer(ctx, fzbuf); + fz_rethrow(ctx); + } + + return fzbuf; +} + +static fz_buffer *create_aligned_text_buffer(pdf_document *doc, const fz_rect *clip, text_widget_info *info, const fz_matrix *tm, char *text) +{ + fz_context *ctx = doc->ctx; + fz_matrix atm = *tm; + + if (info->q != Q_Left) + { + fz_rect rect; + + measure_text(doc, &info->font_rec, tm, text, &rect); + atm.e -= info->q == Q_Right ? rect.x1 : (rect.x1 - rect.x0) / 2; + } + + return create_text_buffer(ctx, clip, info, &atm, text); +} + +static void measure_ascent_descent(pdf_document *doc, font_info *finf, char *text, float *ascent, float *descent) +{ + fz_context *ctx = doc->ctx; + char *testtext = NULL; + fz_rect bbox; + font_info tinf = *finf; + + fz_var(testtext); + fz_try(ctx) + { + /* Heuristic: adding "My" to text will in most cases + * produce a measurement that will encompass all chars */ + testtext = fz_malloc(ctx, strlen(text) + 3); + strcpy(testtext, "My"); + strcat(testtext, text); + tinf.da_rec.font_size = 1; + measure_text(doc, &tinf, &fz_identity, testtext, &bbox); + *descent = -bbox.y0; + *ascent = bbox.y1; + } + fz_always(ctx) + { + fz_free(ctx, testtext); + } + fz_catch(ctx) + { + fz_rethrow(ctx); + } +} + +typedef struct text_splitter_s +{ + font_info *info; + float width; + float height; + float scale; + float unscaled_width; + float fontsize; + char *text; + int done; + float x_orig; + float y_orig; + float x; + float x_end; + int text_start; + int text_end; + int max_lines; + int retry; +} text_splitter; + +static void text_splitter_init(text_splitter *splitter, font_info *info, char *text, float width, float height, int variable) +{ + float fontsize = info->da_rec.font_size; + + memset(splitter, 0, sizeof(*splitter)); + splitter->info = info; + splitter->text = text; + splitter->width = width; + splitter->unscaled_width = width; + splitter->height = height; + splitter->fontsize = fontsize; + splitter->scale = 1.0; + /* RJW: The cast in the following line is important, as otherwise + * under MSVC in the variable = 0 case, splitter->max_lines becomes + * INT_MIN. */ + splitter->max_lines = variable ? (int)(height/fontsize) : INT_MAX; +} + +static void text_splitter_start_pass(text_splitter *splitter) +{ + splitter->text_end = 0; + splitter->x_orig = 0; + splitter->y_orig = 0; +} + +static void text_splitter_start_line(text_splitter *splitter) +{ + splitter->x_end = 0; +} + +static int text_splitter_layout(fz_context *ctx, text_splitter *splitter) +{ + char *text; + float room; + float stride; + int count; + int len; + float fontsize = splitter->info->da_rec.font_size; + + splitter->x = splitter->x_end; + splitter->text_start = splitter->text_end; + + text = splitter->text + splitter->text_start; + room = splitter->unscaled_width - splitter->x; + + if (strchr("\r\n", text[0])) + { + /* Consume return chars and report end of line */ + splitter->text_end += strspn(text, "\r\n"); + splitter->text_start = splitter->text_end; + splitter->done = (splitter->text[splitter->text_end] == '\0'); + return 0; + } + else if (text[0] == ' ') + { + /* Treat each space as a word */ + len = 1; + } + else + { + len = 0; + while (text[len] != '\0' && !strchr(" \r\n", text[len])) + len ++; + } + + stride = pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, len, room, &count); + + /* If not a single char fits although the line is empty, then force one char */ + if (count == 0 && splitter->x == 0.0) + stride = pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, 1, FLT_MAX, &count); + + if (count < len && splitter->retry) + { + /* The word didn't fit and we are in retry mode. Work out the + * least additional scaling that may help */ + float fitwidth; /* width if we force the word in */ + float hstretchwidth; /* width if we just bump by 10% */ + float vstretchwidth; /* width resulting from forcing in another line */ + float bestwidth; + + fitwidth = splitter->x + + pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, len, FLT_MAX, &count); + /* FIXME: temporary fiddle factor. Would be better to work in integers */ + fitwidth *= 1.001f; + + /* Stretching by 10% is worth trying only if processing the first word on the line */ + hstretchwidth = splitter->x == 0.0 + ? splitter->width * 1.1 / splitter->scale + : FLT_MAX; + + vstretchwidth = splitter->width * (splitter->max_lines + 1) * splitter->fontsize + / splitter->height; + + bestwidth = fz_min(fitwidth, fz_min(hstretchwidth, vstretchwidth)); + + if (bestwidth == vstretchwidth) + splitter->max_lines ++; + + splitter->scale = splitter->width / bestwidth; + splitter->unscaled_width = bestwidth; + + splitter->retry = 0; + + /* Try again */ + room = splitter->unscaled_width - splitter->x; + stride = pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, len, room, &count); + } + + /* This is not the first word on the line. Best to give up on this line and push + * the word onto the next */ + if (count < len && splitter->x > 0.0) + return 0; + + splitter->text_end = splitter->text_start + count; + splitter->x_end = splitter->x + stride; + splitter->done = (splitter->text[splitter->text_end] == '\0'); + return 1; +} + +static void text_splitter_move(text_splitter *splitter, float newy, float *relx, float *rely) +{ + *relx = splitter->x - splitter->x_orig; + *rely = newy - splitter->y_orig; + + splitter->x_orig = splitter->x; + splitter->y_orig = newy; +} + +static void text_splitter_retry(text_splitter *splitter) +{ + if (splitter->retry) + { + /* Already tried expanding lines. Overflow must + * be caused by carriage control */ + splitter->max_lines ++; + splitter->retry = 0; + splitter->unscaled_width = splitter->width * splitter->max_lines * splitter->fontsize + / splitter->height; + splitter->scale = splitter->width / splitter->unscaled_width; + } + else + { + splitter->retry = 1; + } +} + +static void fzbuf_print_text_start(fz_context *ctx, fz_buffer *fzbuf, const fz_rect *clip, pdf_obj *col, font_info *font, const fz_matrix *tm) +{ + fz_buffer_printf(ctx, fzbuf, fmt_Tx_BMC); + fz_buffer_printf(ctx, fzbuf, fmt_q); + + if (clip) + { + fz_buffer_printf(ctx, fzbuf, fmt_re, clip->x0, clip->y0, clip->x1 - clip->x0, clip->y1 - clip->y0); + fz_buffer_printf(ctx, fzbuf, fmt_W); + if (col) + { + fzbuf_print_color(ctx, fzbuf, col, 0, 0.0); + fz_buffer_printf(ctx, fzbuf, fmt_f); + } + else + { + fz_buffer_printf(ctx, fzbuf, fmt_n); + } + } + + fz_buffer_printf(ctx, fzbuf, fmt_BT); + + pdf_fzbuf_print_da(ctx, fzbuf, &font->da_rec); + fz_buffer_printf(ctx, fzbuf, "\n"); + + fz_buffer_printf(ctx, fzbuf, fmt_Tm, tm->a, tm->b, tm->c, tm->d, tm->e, tm->f); +} + +static void fzbuf_print_text_end(fz_context *ctx, fz_buffer *fzbuf) +{ + fz_buffer_printf(ctx, fzbuf, fmt_ET); + fz_buffer_printf(ctx, fzbuf, fmt_Q); + fz_buffer_printf(ctx, fzbuf, fmt_EMC); +} + +static void fzbuf_print_text_word(fz_context *ctx, fz_buffer *fzbuf, float x, float y, char *text, int count) +{ + int i; + + fz_buffer_printf(ctx, fzbuf, fmt_Td, x, y); + fz_buffer_printf(ctx, fzbuf, "("); + + for (i = 0; i < count; i++) + fz_buffer_printf(ctx, fzbuf, "%c", text[i]); + + fz_buffer_printf(ctx, fzbuf, ") Tj\n"); +} + +static fz_buffer *create_text_appearance(pdf_document *doc, const fz_rect *bbox, const fz_matrix *oldtm, text_widget_info *info, char *text) +{ + fz_context *ctx = doc->ctx; + int fontsize; + int variable; + float height, width, full_width; + fz_buffer *fzbuf = NULL; + fz_buffer *fztmp = NULL; + fz_rect rect; + fz_rect tbox; + rect = *bbox; + + if (rect.x1 - rect.x0 > 3.0 && rect.y1 - rect.y0 > 3.0) + { + rect.x0 += 1.0; + rect.x1 -= 1.0; + rect.y0 += 1.0; + rect.y1 -= 1.0; + } + + height = rect.y1 - rect.y0; + width = rect.x1 - rect.x0; + full_width = bbox->x1 - bbox->x0; + + fz_var(fzbuf); + fz_var(fztmp); + fz_try(ctx) + { + float ascent, descent; + fz_matrix tm; + + variable = (info->font_rec.da_rec.font_size == 0); + fontsize = variable + ? (info->multiline ? 14.0 : floor(height)) + : info->font_rec.da_rec.font_size; + + info->font_rec.da_rec.font_size = fontsize; + + measure_ascent_descent(doc, &info->font_rec, text, &ascent, &descent); + + if (info->multiline) + { + text_splitter splitter; + + text_splitter_init(&splitter, &info->font_rec, text, width, height, variable); + + while (!splitter.done) + { + /* Try a layout pass */ + int line = 0; + + fz_drop_buffer(ctx, fztmp); + fztmp = NULL; + fztmp = fz_new_buffer(ctx, 0); + + text_splitter_start_pass(&splitter); + + /* Layout unscaled text to a scaled-up width, so that + * the scaled-down text will fit the unscaled width */ + + while (!splitter.done && line < splitter.max_lines) + { + /* Layout a line */ + text_splitter_start_line(&splitter); + + while (!splitter.done && text_splitter_layout(ctx, &splitter)) + { + if (splitter.text[splitter.text_start] != ' ') + { + float x, y; + char *word = text+splitter.text_start; + int wordlen = splitter.text_end-splitter.text_start; + + text_splitter_move(&splitter, -line*fontsize, &x, &y); + fzbuf_print_text_word(ctx, fztmp, x, y, word, wordlen); + } + } + + line ++; + } + + if (!splitter.done) + text_splitter_retry(&splitter); + } + + fzbuf = fz_new_buffer(ctx, 0); + + tm.a = splitter.scale; + tm.b = 0.0; + tm.c = 0.0; + tm.d = splitter.scale; + tm.e = rect.x0; + tm.f = rect.y1 - (1.0+ascent-descent)*fontsize*splitter.scale/2.0; + + fzbuf_print_text_start(ctx, fzbuf, &rect, info->col, &info->font_rec, &tm); + + fz_buffer_cat(ctx, fzbuf, fztmp); + + fzbuf_print_text_end(ctx, fzbuf); + } + else if (info->comb) + { + int i, n = fz_mini((int)strlen(text), info->max_len); + float comb_width = full_width/info->max_len; + float char_width = pdf_text_stride(ctx, info->font_rec.font, fontsize, (unsigned char *)"M", 1, FLT_MAX, NULL); + float init_skip = (comb_width - char_width)/2.0; + + fz_translate(&tm, rect.x0, rect.y1 - (height+(ascent-descent)*fontsize)/2.0); + + fzbuf = fz_new_buffer(ctx, 0); + + fzbuf_print_text_start(ctx, fzbuf, &rect, info->col, &info->font_rec, &tm); + + for (i = 0; i < n; i++) + fzbuf_print_text_word(ctx, fzbuf, i == 0 ? init_skip : comb_width, 0.0, text+i, 1); + + fzbuf_print_text_end(ctx, fzbuf); + } + else + { + if (oldtm) + { + tm = *oldtm; + } + else + { + fz_translate(&tm, rect.x0, rect.y1 - (height+(ascent-descent)*fontsize)/2.0); + + switch (info->q) + { + case Q_Right: tm.e += width; break; + case Q_Cent: tm.e += width/2; break; + } + } + + if (variable) + { + measure_text(doc, &info->font_rec, &tm, text, &tbox); + + if (tbox.x1 - tbox.x0 > width) + { + /* Scale the text to fit but use the same offset + * to keep the baseline constant */ + tm.a *= width / (tbox.x1 - tbox.x0); + tm.d *= width / (tbox.x1 - tbox.x0); + } + } + + fzbuf = create_aligned_text_buffer(doc, &rect, info, &tm, text); + } + } + fz_always(ctx) + { + fz_drop_buffer(ctx, fztmp); + } + fz_catch(ctx) + { + fz_drop_buffer(ctx, fzbuf); + fz_rethrow(ctx); + } + + return fzbuf; +} + +static int get_matrix(pdf_document *doc, pdf_xobject *form, int q, fz_matrix *mt) +{ + fz_context *ctx = doc->ctx; + int found = 0; + pdf_lexbuf lbuf; + fz_stream *str; + + str = pdf_open_stream(doc, pdf_to_num(form->contents), pdf_to_gen(form->contents)); + + pdf_lexbuf_init(ctx, &lbuf, PDF_LEXBUF_SMALL); + + fz_try(ctx) + { + int tok; + float coefs[MATRIX_COEFS]; + int coef_i = 0; + + /* Look for the text matrix Tm in the stream */ + for (tok = pdf_lex(str, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str, &lbuf)) + { + if (tok == PDF_TOK_INT || tok == PDF_TOK_REAL) + { + if (coef_i >= MATRIX_COEFS) + { + int i; + for (i = 0; i < MATRIX_COEFS-1; i++) + coefs[i] = coefs[i+1]; + + coef_i = MATRIX_COEFS-1; + } + + coefs[coef_i++] = tok == PDF_TOK_INT ? lbuf.i : lbuf.f; + } + else + { + if (tok == PDF_TOK_KEYWORD && !strcmp(lbuf.scratch, "Tm") && coef_i == MATRIX_COEFS) + { + found = 1; + mt->a = coefs[0]; + mt->b = coefs[1]; + mt->c = coefs[2]; + mt->d = coefs[3]; + mt->e = coefs[4]; + mt->f = coefs[5]; + } + + coef_i = 0; + } + } + + if (found) + { + fz_rect bbox; + pdf_to_rect(ctx, pdf_dict_gets(form->contents, "BBox"), &bbox); + + switch (q) + { + case Q_Left: + mt->e = bbox.x0 + 1; + break; + + case Q_Cent: + mt->e = (bbox.x1 - bbox.x0) / 2; + break; + + case Q_Right: + mt->e = bbox.x1 - 1; + break; + } + } + } + fz_always(ctx) + { + fz_close(str); + pdf_lexbuf_fin(&lbuf); + } + fz_catch(ctx) + { + fz_rethrow(ctx); + } + + return found; +} + +static char *to_font_encoding(fz_context *ctx, pdf_font_desc *font, char *utf8) +{ + int i; + int needs_converting = 0; + + /* Temporay partial solution. We are using a slow lookup in the conversion + * below, so we avoid performing the conversion unnecessarily. We check for + * top-bit-set chars, and convert only if they are present. We should also + * check that the font encoding is one that agrees with utf8 from 0 to 7f, + * but for now we get away without doing so. This is after all an improvement + * on just strdup */ + for (i = 0; utf8[i] != '\0'; i++) + { + if (utf8[i] & 0x80) + needs_converting = 1; + } + + /* Even if we need to convert, we cannot do so if the font has no cid_to_ucs mapping */ + if (needs_converting && font->cid_to_ucs) + { + char *buf = fz_malloc(ctx, strlen(utf8) + 1); + char *bufp = buf; + + fz_try(ctx) + { + while(*utf8) + { + if (*utf8 & 0x80) + { + int rune; + + utf8 += fz_chartorune(&rune, utf8); + + /* Slow search for the cid that maps to the unicode value held in 'rune" */ + for (i = 0; i < font->cid_to_ucs_len && font->cid_to_ucs[i] != rune; i++) + ; + + /* If found store the cid */ + if (i < font->cid_to_ucs_len) + *bufp++ = i; + } + else + { + *bufp++ = *utf8++; + } + } + + *bufp = '\0'; + } + fz_catch(ctx) + { + fz_free(ctx, buf); + fz_rethrow(ctx); + } + + return buf; + } + else + { + /* If either no conversion is needed or the font has no cid_to_ucs + * mapping then leave unconverted, although in the latter case the result + * is likely incorrect */ + return fz_strdup(ctx, utf8); + } +} + +static void account_for_rot(fz_rect *rect, fz_matrix *mat, int rot) +{ + float width = rect->x1; + float height = rect->y1; + + switch (rot) + { + default: + *mat = fz_identity; + break; + case 90: + fz_pre_rotate(fz_translate(mat, width, 0), rot); + rect->x1 = height; + rect->y1 = width; + break; + case 180: + fz_pre_rotate(fz_translate(mat, width, height), rot); + break; + case 270: + fz_pre_rotate(fz_translate(mat, 0, height), rot); + rect->x1 = height; + rect->y1 = width; + break; + } +} + +static void copy_resources(pdf_obj *dst, pdf_obj *src) +{ + int i, len; + + len = pdf_dict_len(src); + for (i = 0; i < len; i++) + { + pdf_obj *key = pdf_dict_get_key(src, i); + + if (!pdf_dict_get(dst, key)) + pdf_dict_put(dst, key, pdf_dict_get_val(src, i)); + } +} + +static pdf_xobject *load_or_create_form(pdf_document *doc, pdf_obj *obj, fz_rect *rect) +{ + fz_context *ctx = doc->ctx; + pdf_obj *ap = NULL; + fz_matrix mat; + int rot; + pdf_obj *formobj = NULL; + pdf_xobject *form = NULL; + char *dn = "N"; + fz_buffer *fzbuf = NULL; + int create_form = 0; + + fz_var(formobj); + fz_var(form); + fz_var(fzbuf); + fz_try(ctx) + { + rot = pdf_to_int(pdf_dict_getp(obj, "MK/R")); + pdf_to_rect(ctx, pdf_dict_gets(obj, "Rect"), rect); + rect->x1 -= rect->x0; + rect->y1 -= rect->y0; + rect->x0 = rect->y0 = 0; + account_for_rot(rect, &mat, rot); + + ap = pdf_dict_gets(obj, "AP"); + if (ap == NULL) + { + ap = pdf_new_dict(doc, 1); + pdf_dict_puts_drop(obj, "AP", ap); + } + + formobj = pdf_dict_gets(ap, dn); + if (formobj == NULL) + { + formobj = pdf_new_xobject(doc, rect, &mat); + pdf_dict_puts_drop(ap, dn, formobj); + create_form = 1; + } + + form = pdf_load_xobject(doc, formobj); + if (create_form) + { + fzbuf = fz_new_buffer(ctx, 1); + pdf_update_xobject_contents(doc, form, fzbuf); + } + + copy_resources(form->resources, pdf_get_inheritable(doc, obj, "DR")); + } + fz_always(ctx) + { + fz_drop_buffer(ctx, fzbuf); + } + fz_catch(ctx) + { + pdf_drop_xobject(ctx, form); + fz_rethrow(ctx); + } + + return form; +} + +static void update_marked_content(pdf_document *doc, pdf_xobject *form, fz_buffer *fzbuf) +{ + fz_context *ctx = doc->ctx; + pdf_token tok; + pdf_lexbuf lbuf; + fz_stream *str_outer = NULL; + fz_stream *str_inner = NULL; + unsigned char *buf; + int len; + fz_buffer *newbuf = NULL; + + pdf_lexbuf_init(ctx, &lbuf, PDF_LEXBUF_SMALL); + + fz_var(str_outer); + fz_var(str_inner); + fz_var(newbuf); + fz_try(ctx) + { + int bmc_found; + int first = 1; + + newbuf = fz_new_buffer(ctx, 0); + str_outer = pdf_open_stream(doc, pdf_to_num(form->contents), pdf_to_gen(form->contents)); + len = fz_buffer_storage(ctx, fzbuf, &buf); + str_inner = fz_open_memory(ctx, buf, len); + + /* Copy the existing appearance stream to newbuf while looking for BMC */ + for (tok = pdf_lex(str_outer, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_outer, &lbuf)) + { + if (first) + first = 0; + else + fz_buffer_printf(ctx, newbuf, " "); + + pdf_print_token(ctx, newbuf, tok, &lbuf); + if (tok == PDF_TOK_KEYWORD && !strcmp(lbuf.scratch, "BMC")) + break; + } + + bmc_found = (tok != PDF_TOK_EOF); + + if (bmc_found) + { + /* Drop Tx BMC from the replacement appearance stream */ + (void)pdf_lex(str_inner, &lbuf); + (void)pdf_lex(str_inner, &lbuf); + } + + /* Copy the replacement appearance stream to newbuf */ + for (tok = pdf_lex(str_inner, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_inner, &lbuf)) + { + fz_buffer_printf(ctx, newbuf, " "); + pdf_print_token(ctx, newbuf, tok, &lbuf); + } + + if (bmc_found) + { + /* Drop the rest of the existing appearance stream until EMC found */ + for (tok = pdf_lex(str_outer, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_outer, &lbuf)) + { + if (tok == PDF_TOK_KEYWORD && !strcmp(lbuf.scratch, "EMC")) + break; + } + + /* Copy the rest of the existing appearance stream to newbuf */ + for (tok = pdf_lex(str_outer, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_outer, &lbuf)) + { + fz_buffer_printf(ctx, newbuf, " "); + pdf_print_token(ctx, newbuf, tok, &lbuf); + } + } + + /* Use newbuf in place of the existing appearance stream */ + pdf_update_xobject_contents(doc, form, newbuf); + } + fz_always(ctx) + { + fz_close(str_outer); + fz_close(str_inner); + fz_drop_buffer(ctx, newbuf); + pdf_lexbuf_fin(&lbuf); + } + fz_catch(ctx) + { + fz_rethrow(ctx); + } +} + +static int get_border_style(pdf_obj *obj) +{ + char *sname = pdf_to_name(pdf_dict_getp(obj, "BS/S")); + + if (!strcmp(sname, "D")) + return BS_Dashed; + else if (!strcmp(sname, "B")) + return BS_Beveled; + else if (!strcmp(sname, "I")) + return BS_Inset; + else if (!strcmp(sname, "U")) + return BS_Underline; + else + return BS_Solid; +} + +static float get_border_width(pdf_obj *obj) +{ + float w = pdf_to_real(pdf_dict_getp(obj, "BS/W")); + return w == 0.0 ? 1.0 : w; +} + +void pdf_update_text_appearance(pdf_document *doc, pdf_obj *obj, char *eventValue) +{ + fz_context *ctx = doc->ctx; + text_widget_info info; + pdf_xobject *form = NULL; + fz_buffer *fzbuf = NULL; + fz_matrix tm; + fz_rect rect; + int has_tm; + char *text = NULL; + + memset(&info, 0, sizeof(info)); + + fz_var(info); + fz_var(form); + fz_var(fzbuf); + fz_var(text); + fz_try(ctx) + { + get_text_widget_info(doc, obj, &info); + + if (eventValue) + text = to_font_encoding(ctx, info.font_rec.font, eventValue); + else + text = pdf_field_value(doc, obj); + + form = load_or_create_form(doc, obj, &rect); + + has_tm = get_matrix(doc, form, info.q, &tm); + fzbuf = create_text_appearance(doc, &form->bbox, has_tm ? &tm : NULL, &info, + text?text:""); + update_marked_content(doc, form, fzbuf); + } + fz_always(ctx) + { + fz_free(ctx, text); + pdf_drop_xobject(ctx, form); + fz_drop_buffer(ctx, fzbuf); + font_info_fin(ctx, &info.font_rec); + } + fz_catch(ctx) + { + fz_warn(ctx, "update_text_appearance failed"); + } +} + +void pdf_update_combobox_appearance(pdf_document *doc, pdf_obj *obj) +{ + fz_context *ctx = doc->ctx; + text_widget_info info; + pdf_xobject *form = NULL; + fz_buffer *fzbuf = NULL; + fz_matrix tm; + fz_rect rect; + int has_tm; + pdf_obj *val; + char *text; + + memset(&info, 0, sizeof(info)); + + fz_var(info); + fz_var(form); + fz_var(fzbuf); + fz_try(ctx) + { + get_text_widget_info(doc, obj, &info); + + val = pdf_get_inheritable(doc, obj, "V"); + + if (pdf_is_array(val)) + val = pdf_array_get(val, 0); + + text = pdf_to_str_buf(val); + + if (!text) + text = ""; + + form = load_or_create_form(doc, obj, &rect); + + has_tm = get_matrix(doc, form, info.q, &tm); + fzbuf = create_text_appearance(doc, &form->bbox, has_tm ? &tm : NULL, &info, + text?text:""); + update_marked_content(doc, form, fzbuf); + } + fz_always(ctx) + { + pdf_drop_xobject(ctx, form); + fz_drop_buffer(ctx, fzbuf); + font_info_fin(ctx, &info.font_rec); + } + fz_catch(ctx) + { + fz_warn(ctx, "update_text_appearance failed"); + } +} + +void pdf_update_pushbutton_appearance(pdf_document *doc, pdf_obj *obj) +{ + fz_context *ctx = doc->ctx; + fz_rect rect; + pdf_xobject *form = NULL; + fz_buffer *fzbuf = NULL; + pdf_obj *tobj = NULL; + font_info font_rec; + int bstyle; + float bwidth; + float btotal; + + memset(&font_rec, 0, sizeof(font_rec)); + + fz_var(font_rec); + fz_var(form); + fz_var(fzbuf); + fz_try(ctx) + { + form = load_or_create_form(doc, obj, &rect); + fzbuf = fz_new_buffer(ctx, 0); + tobj = pdf_dict_getp(obj, "MK/BG"); + if (pdf_is_array(tobj)) + { + fzbuf_print_color(ctx, fzbuf, tobj, 0, 0.0); + fz_buffer_printf(ctx, fzbuf, fmt_re, + rect.x0, rect.y0, rect.x1, rect.y1); + fz_buffer_printf(ctx, fzbuf, fmt_f); + } + bstyle = get_border_style(obj); + bwidth = get_border_width(obj); + btotal = bwidth; + if (bstyle == BS_Beveled || bstyle == BS_Inset) + { + btotal += bwidth; + + if (bstyle == BS_Beveled) + fz_buffer_printf(ctx, fzbuf, fmt_g, 1.0); + else + fz_buffer_printf(ctx, fzbuf, fmt_g, 0.33); + fz_buffer_printf(ctx, fzbuf, fmt_m, bwidth, bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, bwidth, rect.y1 - bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - bwidth, rect.y1 - bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - 2 * bwidth, rect.y1 - 2 * bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, 2 * bwidth, rect.y1 - 2 * bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, 2 * bwidth, 2 * bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_f); + if (bstyle == BS_Beveled) + fzbuf_print_color(ctx, fzbuf, tobj, 0, -0.25); + else + fz_buffer_printf(ctx, fzbuf, fmt_g, 0.66); + fz_buffer_printf(ctx, fzbuf, fmt_m, rect.x1 - bwidth, rect.y1 - bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - bwidth, bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, bwidth, bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, 2 * bwidth, 2 * bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - 2 * bwidth, 2 * bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - 2 * bwidth, rect.y1 - 2 * bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_f); + } + + tobj = pdf_dict_getp(obj, "MK/BC"); + if (tobj) + { + fzbuf_print_color(ctx, fzbuf, tobj, 1, 0.0); + fz_buffer_printf(ctx, fzbuf, fmt_w, bwidth); + fz_buffer_printf(ctx, fzbuf, fmt_re, + bwidth/2, bwidth/2, + rect.x1 -bwidth/2, rect.y1 - bwidth/2); + fz_buffer_printf(ctx, fzbuf, fmt_s); + } + + tobj = pdf_dict_getp(obj, "MK/CA"); + if (tobj) + { + fz_rect clip = rect; + fz_rect bounds; + fz_matrix mat; + char *da = pdf_to_str_buf(pdf_get_inheritable(doc, obj, "DA")); + char *text = pdf_to_str_buf(tobj); + + clip.x0 += btotal; + clip.y0 += btotal; + clip.x1 -= btotal; + clip.y1 -= btotal; + + get_font_info(doc, form->resources, da, &font_rec); + measure_text(doc, &font_rec, &fz_identity, text, &bounds); + fz_translate(&mat, (rect.x1 - bounds.x1)/2, (rect.y1 - bounds.y1)/2); + fzbuf_print_text(ctx, fzbuf, &clip, NULL, &font_rec, &mat, text); + } + + pdf_update_xobject_contents(doc, form, fzbuf); + } + fz_always(ctx) + { + font_info_fin(ctx, &font_rec); + fz_drop_buffer(ctx, fzbuf); + pdf_drop_xobject(ctx, form); + } + fz_catch(ctx) + { + fz_rethrow(ctx); + } +} + +void pdf_update_text_markup_appearance(pdf_document *doc, pdf_annot *annot, fz_annot_type type) +{ + float color[3]; + float alpha; + float line_height; + float line_thickness; + + switch (type) + { + case FZ_ANNOT_HIGHLIGHT: + color[0] = 1.0; + color[1] = 1.0; + color[2] = 0.0; + alpha = 0.5; + line_thickness = 1.0; + line_height = 0.5; + break; + case FZ_ANNOT_UNDERLINE: + color[0] = 0.0; + color[1] = 0.0; + color[2] = 1.0; + alpha = 1.0; + line_thickness = LINE_THICKNESS; + line_height = UNDERLINE_HEIGHT; + break; + case FZ_ANNOT_STRIKEOUT: + color[0] = 1.0; + color[1] = 0.0; + color[2] = 0.0; + alpha = 1.0; + line_thickness = LINE_THICKNESS; + line_height = STRIKE_HEIGHT; + break; + default: + return; + } + + pdf_set_markup_appearance(doc, annot, color, alpha, line_thickness, line_height); +} + +static void update_rect(fz_context *ctx, pdf_annot *annot) +{ + pdf_to_rect(ctx, pdf_dict_gets(annot->obj, "Rect"), &annot->rect); + annot->pagerect = annot->rect; + fz_transform_rect(&annot->pagerect, &annot->page->ctm); +} + +void pdf_set_annot_appearance(pdf_document *doc, pdf_annot *annot, fz_rect *rect, fz_display_list *disp_list) +{ + fz_context *ctx = doc->ctx; + pdf_obj *obj = annot->obj; + const fz_matrix *page_ctm = &annot->page->ctm; + fz_matrix ctm; + fz_matrix mat = fz_identity; + fz_device *dev = NULL; + pdf_xobject *xobj = NULL; + + fz_invert_matrix(&ctm, page_ctm); + + fz_var(dev); + fz_try(ctx) + { + pdf_obj *ap_obj; + fz_rect trect = *rect; + + fz_transform_rect(&trect, &ctm); + + pdf_dict_puts_drop(obj, "Rect", pdf_new_rect(doc, &trect)); + + /* See if there is a current normal appearance */ + ap_obj = pdf_dict_getp(obj, "AP/N"); + if (!pdf_is_stream(doc, pdf_to_num(ap_obj), pdf_to_gen(ap_obj))) + ap_obj = NULL; + + if (ap_obj == NULL) + { + ap_obj = pdf_new_xobject(doc, &trect, &mat); + pdf_dict_putp_drop(obj, "AP/N", ap_obj); + } + else + { + pdf_xref_ensure_incremental_object(doc, pdf_to_num(ap_obj)); + pdf_dict_puts_drop(ap_obj, "Rect", pdf_new_rect(doc, &trect)); + pdf_dict_puts_drop(ap_obj, "Matrix", pdf_new_matrix(doc, &mat)); + } + + dev = pdf_new_pdf_device(doc, ap_obj, pdf_dict_gets(ap_obj, "Resources"), &mat); + fz_run_display_list(disp_list, dev, &ctm, &fz_infinite_rect, NULL); + fz_free_device(dev); + + /* Mark the appearance as changed - required for partial update */ + xobj = pdf_load_xobject(doc, ap_obj); + if (xobj) + { + xobj->iteration++; + pdf_drop_xobject(ctx, xobj); + } + + doc->dirty = 1; + + update_rect(ctx, annot); + } + fz_catch(ctx) + { + fz_free_device(dev); + fz_rethrow(ctx); + } +} + +static fz_point * +quadpoints(pdf_document *doc, pdf_obj *annot, int *nout) +{ + fz_context *ctx = doc->ctx; + pdf_obj *quad = pdf_dict_gets(annot, "QuadPoints"); + fz_point *qp = NULL; + int i, n; + + if (!quad) + return NULL; + + n = pdf_array_len(quad); + + if (n%8 != 0) + return NULL; + + fz_var(qp); + fz_try(ctx) + { + qp = fz_malloc_array(ctx, n/2, sizeof(fz_point)); + + for (i = 0; i < n; i += 2) + { + qp[i/2].x = pdf_to_real(pdf_array_get(quad, i)); + qp[i/2].y = pdf_to_real(pdf_array_get(quad, i+1)); + } + } + fz_catch(ctx) + { + fz_free(ctx, qp); + fz_rethrow(ctx); + } + + *nout = n/2; + + return qp; +} + +void pdf_set_markup_appearance(pdf_document *doc, pdf_annot *annot, float color[3], float alpha, float line_thickness, float line_height) +{ + fz_context *ctx = doc->ctx; + const fz_matrix *page_ctm = &annot->page->ctm; + fz_path *path = NULL; + fz_stroke_state *stroke = NULL; + fz_device *dev = NULL; + fz_display_list *strike_list = NULL; + int i, n; + fz_point *qp = quadpoints(doc, annot->obj, &n); + + if (!qp || n <= 0) + return; + + fz_var(path); + fz_var(stroke); + fz_var(dev); + fz_var(strike_list); + fz_try(ctx) + { + fz_rect rect = fz_empty_rect; + + rect.x0 = rect.x1 = qp[0].x; + rect.y0 = rect.y1 = qp[0].y; + for (i = 0; i < n; i++) + fz_include_point_in_rect(&rect, &qp[i]); + + strike_list = fz_new_display_list(ctx); + dev = fz_new_list_device(ctx, strike_list); + + for (i = 0; i < n; i += 4) + { + fz_point pt0 = qp[i]; + fz_point pt1 = qp[i+1]; + fz_point up; + float thickness; + + up.x = qp[i+2].x - qp[i+1].x; + up.y = qp[i+2].y - qp[i+1].y; + + pt0.x += line_height * up.x; + pt0.y += line_height * up.y; + pt1.x += line_height * up.x; + pt1.y += line_height * up.y; + + thickness = sqrtf(up.x * up.x + up.y * up.y) * line_thickness; + + if (!stroke || fz_abs(stroke->linewidth - thickness) < SMALL_FLOAT) + { + if (stroke) + { + // assert(path) + fz_stroke_path(dev, path, stroke, page_ctm, fz_device_rgb(ctx), color, alpha); + fz_drop_stroke_state(ctx, stroke); + stroke = NULL; + fz_free_path(ctx, path); + path = NULL; + } + + stroke = fz_new_stroke_state(ctx); + stroke->linewidth = thickness; + path = fz_new_path(ctx); + } + + fz_moveto(ctx, path, pt0.x, pt0.y); + fz_lineto(ctx, path, pt1.x, pt1.y); + } + + if (stroke) + { + fz_stroke_path(dev, path, stroke, page_ctm, fz_device_rgb(ctx), color, alpha); + } + + fz_transform_rect(&rect, page_ctm); + pdf_set_annot_appearance(doc, annot, &rect, strike_list); + } + fz_always(ctx) + { + fz_free(ctx, qp); + fz_free_device(dev); + fz_drop_stroke_state(ctx, stroke); + fz_free_path(ctx, path); + fz_drop_display_list(ctx, strike_list); + } + fz_catch(ctx) + { + fz_rethrow(ctx); + } +} + +static fz_colorspace *pdf_to_color(pdf_document *doc, pdf_obj *col, float color[4]) +{ + fz_colorspace *cs; + int i, ncol = pdf_array_len(col); + + switch (ncol) + { + case 1: cs = fz_device_gray(doc->ctx); break; + case 3: cs = fz_device_rgb(doc->ctx); break; + case 4: cs = fz_device_cmyk(doc->ctx); break; + default: return NULL; + } + + for (i = 0; i < ncol; i++) + color[i] = pdf_to_real(pdf_array_get(col, i)); + + return cs; +} + +void pdf_set_ink_appearance(pdf_document *doc, pdf_annot *annot) +{ + fz_context *ctx = doc->ctx; + const fz_matrix *page_ctm = &annot->page->ctm; + fz_path *path = NULL; + fz_stroke_state *stroke = NULL; + fz_device *dev = NULL; + fz_display_list *strike_list = NULL; + + fz_var(path); + fz_var(stroke); + fz_var(dev); + fz_var(strike_list); + fz_try(ctx) + { + fz_rect rect = fz_empty_rect; + fz_colorspace *cs; + float color[4]; + float width; + pdf_obj *list; + int n, m, i, j; + + cs = pdf_to_color(doc, pdf_dict_gets(annot->obj, "C"), color); + if (!cs) + { + cs = fz_device_rgb(ctx); + color[0] = 1.0f; + color[1] = 0.0f; + color[2] = 0.0f; + } + + width = pdf_to_real(pdf_dict_gets(pdf_dict_gets(annot->obj, "BS"), "W")); + if (width == 0.0f) + width = 1.0f; + + list = pdf_dict_gets(annot->obj, "InkList"); + + n = pdf_array_len(list); + + strike_list = fz_new_display_list(ctx); + dev = fz_new_list_device(ctx, strike_list); + path = fz_new_path(ctx); + stroke = fz_new_stroke_state(ctx); + stroke->linewidth = width; + + for (i = 0; i < n; i ++) + { + fz_point pt_last; + pdf_obj *arc = pdf_array_get(list, i); + m = pdf_array_len(arc); + + for (j = 0; j < m-1; j += 2) + { + fz_point pt; + pt.x = pdf_to_real(pdf_array_get(arc, j)); + pt.y = pdf_to_real(pdf_array_get(arc, j+1)); + + if (i == 0 && j == 0) + { + rect.x0 = rect.x1 = pt.x; + rect.y0 = rect.y1 = pt.y; + } + else + { + fz_include_point_in_rect(&rect, &pt); + } + + if (j == 0) + fz_moveto(ctx, path, pt.x, pt.y); + else + fz_curvetov(ctx, path, pt_last.x, pt_last.y, (pt.x + pt_last.x) / 2, (pt.y + pt_last.y) / 2); + pt_last = pt; + } + fz_lineto(ctx, path, pt_last.x, pt_last.y); + } + + fz_stroke_path(dev, path, stroke, page_ctm, cs, color, 1.0f); + + fz_expand_rect(&rect, width); + + fz_transform_rect(&rect, page_ctm); + pdf_set_annot_appearance(doc, annot, &rect, strike_list); + } + fz_always(ctx) + { + fz_free_device(dev); + fz_drop_stroke_state(ctx, stroke); + fz_free_path(ctx, path); + fz_drop_display_list(ctx, strike_list); + } + fz_catch(ctx) + { + fz_rethrow(ctx); + } +} diff --git a/source/pdf/pdf-form.c b/source/pdf/pdf-form.c index 661bb5b7..73c9d2e5 100644 --- a/source/pdf/pdf-form.c +++ b/source/pdf/pdf-form.c @@ -1,10 +1,5 @@ #include "mupdf/pdf.h" -#define MATRIX_COEFS (6) - -#define STRIKE_HEIGHT (0.375f) -#define UNDERLINE_HEIGHT (0.075f) -#define LINE_THICKNESS (0.07f) #define SMALL_FLOAT (0.00001) enum @@ -21,15 +16,6 @@ enum F_LockedContents = 1 << (10-1) }; -enum -{ - BS_Solid, - BS_Dashed, - BS_Beveled, - BS_Inset, - BS_Underline -}; - /* Must be kept in sync with definitions in pdf_util.js */ enum { @@ -39,83 +25,6 @@ enum Display_NoView }; -enum -{ - Q_Left = 0, - Q_Cent = 1, - Q_Right = 2 -}; - -typedef struct da_info_s -{ - char *font_name; - int font_size; - float col[4]; - int col_size; -} da_info; - -typedef struct font_info_s -{ - da_info da_rec; - pdf_font_desc *font; -} font_info; - -typedef struct text_widget_info_s -{ - pdf_obj *dr; - pdf_obj *col; - font_info font_rec; - int q; - int multiline; - int comb; - int max_len; -} text_widget_info; - -static const char *fmt_re = "%f %f %f %f re\n"; -static const char *fmt_f = "f\n"; -static const char *fmt_s = "s\n"; -static const char *fmt_g = "%f g\n"; -static const char *fmt_m = "%f %f m\n"; -static const char *fmt_l = "%f %f l\n"; -static const char *fmt_w = "%f w\n"; -static const char *fmt_Tx_BMC = "/Tx BMC\n"; -static const char *fmt_q = "q\n"; -static const char *fmt_W = "W\n"; -static const char *fmt_n = "n\n"; -static const char *fmt_BT = "BT\n"; -static const char *fmt_Tm = "%1.2f %1.2f %1.2f %1.2f %1.2f %1.2f Tm\n"; -static const char *fmt_Td = "%f %f Td\n"; -static const char *fmt_Tj = " Tj\n"; -static const char *fmt_ET = "ET\n"; -static const char *fmt_Q = "Q\n"; -static const char *fmt_EMC = "EMC\n"; - -static void account_for_rot(fz_rect *rect, fz_matrix *mat, int rot) -{ - float width = rect->x1; - float height = rect->y1; - - switch (rot) - { - default: - *mat = fz_identity; - break; - case 90: - fz_pre_rotate(fz_translate(mat, width, 0), rot); - rect->x1 = height; - rect->y1 = width; - break; - case 180: - fz_pre_rotate(fz_translate(mat, width, height), rot); - break; - case 270: - fz_pre_rotate(fz_translate(mat, 0, height), rot); - rect->x1 = height; - rect->y1 = width; - break; - } -} - static char *get_string_or_stream(pdf_document *doc, pdf_obj *obj) { fz_context *ctx = doc->ctx; @@ -185,853 +94,6 @@ static void pdf_field_mark_dirty(pdf_document *doc, pdf_obj *field) } } -static void copy_resources(pdf_obj *dst, pdf_obj *src) -{ - int i, len; - - len = pdf_dict_len(src); - for (i = 0; i < len; i++) - { - pdf_obj *key = pdf_dict_get_key(src, i); - - if (!pdf_dict_get(dst, key)) - pdf_dict_put(dst, key, pdf_dict_get_val(src, i)); - } -} - -static void da_info_fin(fz_context *ctx, da_info *di) -{ - fz_free(ctx, di->font_name); - di->font_name = NULL; -} - -static void da_check_stack(float *stack, int *top) -{ - if (*top == 32) - { - memmove(stack, stack + 1, 31 * sizeof(stack[0])); - *top = 31; - } -} - -static void parse_da(fz_context *ctx, char *da, da_info *di) -{ - float stack[32]; - int top = 0; - pdf_token tok; - char *name = NULL; - pdf_lexbuf lbuf; - fz_stream *str = fz_open_memory(ctx, (unsigned char *)da, strlen(da)); - - pdf_lexbuf_init(ctx, &lbuf, PDF_LEXBUF_SMALL); - - fz_var(str); - fz_var(name); - fz_try(ctx) - { - for (tok = pdf_lex(str, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str, &lbuf)) - { - switch (tok) - { - case PDF_TOK_NAME: - fz_free(ctx, name); - name = fz_strdup(ctx, lbuf.scratch); - break; - - case PDF_TOK_INT: - da_check_stack(stack, &top); - stack[top] = lbuf.i; - top ++; - break; - - case PDF_TOK_REAL: - da_check_stack(stack, &top); - stack[top] = lbuf.f; - top ++; - break; - - case PDF_TOK_KEYWORD: - if (!strcmp(lbuf.scratch, "Tf")) - { - di->font_size = stack[0]; - di->font_name = name; - name = NULL; - } - else if (!strcmp(lbuf.scratch, "rg")) - { - di->col[0] = stack[0]; - di->col[1] = stack[1]; - di->col[2] = stack[2]; - di->col_size = 3; - } - - fz_free(ctx, name); - name = NULL; - top = 0; - break; - - default: - break; - } - } - } - fz_always(ctx) - { - fz_free(ctx, name); - fz_close(str); - pdf_lexbuf_fin(&lbuf); - } - fz_catch(ctx) - { - fz_rethrow(ctx); - } -} - -static void get_font_info(pdf_document *doc, pdf_obj *dr, char *da, font_info *font_rec) -{ - fz_context *ctx = doc->ctx; - - parse_da(ctx, da, &font_rec->da_rec); - if (font_rec->da_rec.font_name == NULL) - fz_throw(ctx, FZ_ERROR_GENERIC, "No font name in default appearance"); - font_rec->font = pdf_load_font(doc, dr, pdf_dict_gets(pdf_dict_gets(dr, "Font"), font_rec->da_rec.font_name), 0); -} - -static void font_info_fin(fz_context *ctx, font_info *font_rec) -{ - pdf_drop_font(ctx, font_rec->font); - font_rec->font = NULL; - da_info_fin(ctx, &font_rec->da_rec); -} - -static void get_text_widget_info(pdf_document *doc, pdf_obj *widget, text_widget_info *info) -{ - char *da = pdf_to_str_buf(pdf_get_inheritable(doc, widget, "DA")); - int ff = pdf_get_field_flags(doc, widget); - pdf_obj *ml = pdf_get_inheritable(doc, widget, "MaxLen"); - - info->dr = pdf_get_inheritable(doc, widget, "DR"); - info->col = pdf_dict_getp(widget, "MK/BG"); - info->q = pdf_to_int(pdf_get_inheritable(doc, widget, "Q")); - info->multiline = (ff & Ff_Multiline) != 0; - info->comb = (ff & (Ff_Multiline|Ff_Password|Ff_FileSelect|Ff_Comb)) == Ff_Comb; - - if (ml == NULL) - info->comb = 0; - else - info->max_len = pdf_to_int(ml); - - get_font_info(doc, info->dr, da, &info->font_rec); -} - -static void fzbuf_print_da(fz_context *ctx, fz_buffer *fzbuf, da_info *di) -{ - if (di->font_name != NULL && di->font_size != 0) - fz_buffer_printf(ctx, fzbuf, "/%s %d Tf", di->font_name, di->font_size); - - switch (di->col_size) - { - case 1: - fz_buffer_printf(ctx, fzbuf, " %f g", di->col[0]); - break; - - case 3: - fz_buffer_printf(ctx, fzbuf, " %f %f %f rg", di->col[0], di->col[1], di->col[2]); - break; - - case 4: - fz_buffer_printf(ctx, fzbuf, " %f %f %f %f k", di->col[0], di->col[1], di->col[2], di->col[3]); - break; - - default: - fz_buffer_printf(ctx, fzbuf, " 0 g"); - break; - } -} - -static fz_rect *measure_text(pdf_document *doc, font_info *font_rec, const fz_matrix *tm, char *text, fz_rect *bbox) -{ - pdf_measure_text(doc->ctx, font_rec->font, (unsigned char *)text, strlen(text), bbox); - - bbox->x0 *= font_rec->da_rec.font_size * tm->a; - bbox->y0 *= font_rec->da_rec.font_size * tm->d; - bbox->x1 *= font_rec->da_rec.font_size * tm->a; - bbox->y1 *= font_rec->da_rec.font_size * tm->d; - - return bbox; -} - -static void fzbuf_print_color(fz_context *ctx, fz_buffer *fzbuf, pdf_obj *arr, int stroke, float adj) -{ - switch (pdf_array_len(arr)) - { - case 1: - fz_buffer_printf(ctx, fzbuf, stroke?"%f G\n":"%f g\n", - pdf_to_real(pdf_array_get(arr, 0)) + adj); - break; - case 3: - fz_buffer_printf(ctx, fzbuf, stroke?"%f %f %f RG\n":"%f %f %f rg\n", - pdf_to_real(pdf_array_get(arr, 0)) + adj, - pdf_to_real(pdf_array_get(arr, 1)) + adj, - pdf_to_real(pdf_array_get(arr, 2)) + adj); - break; - case 4: - fz_buffer_printf(ctx, fzbuf, stroke?"%f %f %f %f K\n":"%f %f %f %f k\n", - pdf_to_real(pdf_array_get(arr, 0)), - pdf_to_real(pdf_array_get(arr, 1)), - pdf_to_real(pdf_array_get(arr, 2)), - pdf_to_real(pdf_array_get(arr, 3))); - break; - } -} - -static void fzbuf_print_text(fz_context *ctx, fz_buffer *fzbuf, const fz_rect *clip, pdf_obj *col, font_info *font_rec, const fz_matrix *tm, char *text) -{ - fz_buffer_printf(ctx, fzbuf, fmt_q); - if (clip) - { - fz_buffer_printf(ctx, fzbuf, fmt_re, clip->x0, clip->y0, clip->x1 - clip->x0, clip->y1 - clip->y0); - fz_buffer_printf(ctx, fzbuf, fmt_W); - if (col) - { - fzbuf_print_color(ctx, fzbuf, col, 0, 0.0); - fz_buffer_printf(ctx, fzbuf, fmt_f); - } - else - { - fz_buffer_printf(ctx, fzbuf, fmt_n); - } - } - - fz_buffer_printf(ctx, fzbuf, fmt_BT); - - fzbuf_print_da(ctx, fzbuf, &font_rec->da_rec); - - fz_buffer_printf(ctx, fzbuf, "\n"); - if (tm) - fz_buffer_printf(ctx, fzbuf, fmt_Tm, tm->a, tm->b, tm->c, tm->d, tm->e, tm->f); - - fz_buffer_cat_pdf_string(ctx, fzbuf, text); - fz_buffer_printf(ctx, fzbuf, fmt_Tj); - fz_buffer_printf(ctx, fzbuf, fmt_ET); - fz_buffer_printf(ctx, fzbuf, fmt_Q); -} - -static fz_buffer *create_text_buffer(fz_context *ctx, const fz_rect *clip, text_widget_info *info, const fz_matrix *tm, char *text) -{ - fz_buffer *fzbuf = fz_new_buffer(ctx, 0); - - fz_try(ctx) - { - fz_buffer_printf(ctx, fzbuf, fmt_Tx_BMC); - fzbuf_print_text(ctx, fzbuf, clip, info->col, &info->font_rec, tm, text); - fz_buffer_printf(ctx, fzbuf, fmt_EMC); - } - fz_catch(ctx) - { - fz_drop_buffer(ctx, fzbuf); - fz_rethrow(ctx); - } - - return fzbuf; -} - -static fz_buffer *create_aligned_text_buffer(pdf_document *doc, const fz_rect *clip, text_widget_info *info, const fz_matrix *tm, char *text) -{ - fz_context *ctx = doc->ctx; - fz_matrix atm = *tm; - - if (info->q != Q_Left) - { - fz_rect rect; - - measure_text(doc, &info->font_rec, tm, text, &rect); - atm.e -= info->q == Q_Right ? rect.x1 : (rect.x1 - rect.x0) / 2; - } - - return create_text_buffer(ctx, clip, info, &atm, text); -} - -static void measure_ascent_descent(pdf_document *doc, font_info *finf, char *text, float *ascent, float *descent) -{ - fz_context *ctx = doc->ctx; - char *testtext = NULL; - fz_rect bbox; - font_info tinf = *finf; - - fz_var(testtext); - fz_try(ctx) - { - /* Heuristic: adding "My" to text will in most cases - * produce a measurement that will encompass all chars */ - testtext = fz_malloc(ctx, strlen(text) + 3); - strcpy(testtext, "My"); - strcat(testtext, text); - tinf.da_rec.font_size = 1; - measure_text(doc, &tinf, &fz_identity, testtext, &bbox); - *descent = -bbox.y0; - *ascent = bbox.y1; - } - fz_always(ctx) - { - fz_free(ctx, testtext); - } - fz_catch(ctx) - { - fz_rethrow(ctx); - } -} - -typedef struct text_splitter_s -{ - font_info *info; - float width; - float height; - float scale; - float unscaled_width; - float fontsize; - char *text; - int done; - float x_orig; - float y_orig; - float x; - float x_end; - int text_start; - int text_end; - int max_lines; - int retry; -} text_splitter; - -static void text_splitter_init(text_splitter *splitter, font_info *info, char *text, float width, float height, int variable) -{ - float fontsize = info->da_rec.font_size; - - memset(splitter, 0, sizeof(*splitter)); - splitter->info = info; - splitter->text = text; - splitter->width = width; - splitter->unscaled_width = width; - splitter->height = height; - splitter->fontsize = fontsize; - splitter->scale = 1.0; - /* RJW: The cast in the following line is important, as otherwise - * under MSVC in the variable = 0 case, splitter->max_lines becomes - * INT_MIN. */ - splitter->max_lines = variable ? (int)(height/fontsize) : INT_MAX; -} - -static void text_splitter_start_pass(text_splitter *splitter) -{ - splitter->text_end = 0; - splitter->x_orig = 0; - splitter->y_orig = 0; -} - -static void text_splitter_start_line(text_splitter *splitter) -{ - splitter->x_end = 0; -} - -static int text_splitter_layout(fz_context *ctx, text_splitter *splitter) -{ - char *text; - float room; - float stride; - int count; - int len; - float fontsize = splitter->info->da_rec.font_size; - - splitter->x = splitter->x_end; - splitter->text_start = splitter->text_end; - - text = splitter->text + splitter->text_start; - room = splitter->unscaled_width - splitter->x; - - if (strchr("\r\n", text[0])) - { - /* Consume return chars and report end of line */ - splitter->text_end += strspn(text, "\r\n"); - splitter->text_start = splitter->text_end; - splitter->done = (splitter->text[splitter->text_end] == '\0'); - return 0; - } - else if (text[0] == ' ') - { - /* Treat each space as a word */ - len = 1; - } - else - { - len = 0; - while (text[len] != '\0' && !strchr(" \r\n", text[len])) - len ++; - } - - stride = pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, len, room, &count); - - /* If not a single char fits although the line is empty, then force one char */ - if (count == 0 && splitter->x == 0.0) - stride = pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, 1, FLT_MAX, &count); - - if (count < len && splitter->retry) - { - /* The word didn't fit and we are in retry mode. Work out the - * least additional scaling that may help */ - float fitwidth; /* width if we force the word in */ - float hstretchwidth; /* width if we just bump by 10% */ - float vstretchwidth; /* width resulting from forcing in another line */ - float bestwidth; - - fitwidth = splitter->x + - pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, len, FLT_MAX, &count); - /* FIXME: temporary fiddle factor. Would be better to work in integers */ - fitwidth *= 1.001f; - - /* Stretching by 10% is worth trying only if processing the first word on the line */ - hstretchwidth = splitter->x == 0.0 - ? splitter->width * 1.1 / splitter->scale - : FLT_MAX; - - vstretchwidth = splitter->width * (splitter->max_lines + 1) * splitter->fontsize - / splitter->height; - - bestwidth = fz_min(fitwidth, fz_min(hstretchwidth, vstretchwidth)); - - if (bestwidth == vstretchwidth) - splitter->max_lines ++; - - splitter->scale = splitter->width / bestwidth; - splitter->unscaled_width = bestwidth; - - splitter->retry = 0; - - /* Try again */ - room = splitter->unscaled_width - splitter->x; - stride = pdf_text_stride(ctx, splitter->info->font, fontsize, (unsigned char *)text, len, room, &count); - } - - /* This is not the first word on the line. Best to give up on this line and push - * the word onto the next */ - if (count < len && splitter->x > 0.0) - return 0; - - splitter->text_end = splitter->text_start + count; - splitter->x_end = splitter->x + stride; - splitter->done = (splitter->text[splitter->text_end] == '\0'); - return 1; -} - -static void text_splitter_move(text_splitter *splitter, float newy, float *relx, float *rely) -{ - *relx = splitter->x - splitter->x_orig; - *rely = newy - splitter->y_orig; - - splitter->x_orig = splitter->x; - splitter->y_orig = newy; -} - -static void text_splitter_retry(text_splitter *splitter) -{ - if (splitter->retry) - { - /* Already tried expanding lines. Overflow must - * be caused by carriage control */ - splitter->max_lines ++; - splitter->retry = 0; - splitter->unscaled_width = splitter->width * splitter->max_lines * splitter->fontsize - / splitter->height; - splitter->scale = splitter->width / splitter->unscaled_width; - } - else - { - splitter->retry = 1; - } -} - -static void fzbuf_print_text_start(fz_context *ctx, fz_buffer *fzbuf, const fz_rect *clip, pdf_obj *col, font_info *font, const fz_matrix *tm) -{ - fz_buffer_printf(ctx, fzbuf, fmt_Tx_BMC); - fz_buffer_printf(ctx, fzbuf, fmt_q); - - if (clip) - { - fz_buffer_printf(ctx, fzbuf, fmt_re, clip->x0, clip->y0, clip->x1 - clip->x0, clip->y1 - clip->y0); - fz_buffer_printf(ctx, fzbuf, fmt_W); - if (col) - { - fzbuf_print_color(ctx, fzbuf, col, 0, 0.0); - fz_buffer_printf(ctx, fzbuf, fmt_f); - } - else - { - fz_buffer_printf(ctx, fzbuf, fmt_n); - } - } - - fz_buffer_printf(ctx, fzbuf, fmt_BT); - - fzbuf_print_da(ctx, fzbuf, &font->da_rec); - fz_buffer_printf(ctx, fzbuf, "\n"); - - fz_buffer_printf(ctx, fzbuf, fmt_Tm, tm->a, tm->b, tm->c, tm->d, tm->e, tm->f); -} - -static void fzbuf_print_text_end(fz_context *ctx, fz_buffer *fzbuf) -{ - fz_buffer_printf(ctx, fzbuf, fmt_ET); - fz_buffer_printf(ctx, fzbuf, fmt_Q); - fz_buffer_printf(ctx, fzbuf, fmt_EMC); -} - -static void fzbuf_print_text_word(fz_context *ctx, fz_buffer *fzbuf, float x, float y, char *text, int count) -{ - int i; - - fz_buffer_printf(ctx, fzbuf, fmt_Td, x, y); - fz_buffer_printf(ctx, fzbuf, "("); - - for (i = 0; i < count; i++) - fz_buffer_printf(ctx, fzbuf, "%c", text[i]); - - fz_buffer_printf(ctx, fzbuf, ") Tj\n"); -} - -static fz_buffer *create_text_appearance(pdf_document *doc, const fz_rect *bbox, const fz_matrix *oldtm, text_widget_info *info, char *text) -{ - fz_context *ctx = doc->ctx; - int fontsize; - int variable; - float height, width, full_width; - fz_buffer *fzbuf = NULL; - fz_buffer *fztmp = NULL; - fz_rect rect; - fz_rect tbox; - rect = *bbox; - - if (rect.x1 - rect.x0 > 3.0 && rect.y1 - rect.y0 > 3.0) - { - rect.x0 += 1.0; - rect.x1 -= 1.0; - rect.y0 += 1.0; - rect.y1 -= 1.0; - } - - height = rect.y1 - rect.y0; - width = rect.x1 - rect.x0; - full_width = bbox->x1 - bbox->x0; - - fz_var(fzbuf); - fz_var(fztmp); - fz_try(ctx) - { - float ascent, descent; - fz_matrix tm; - - variable = (info->font_rec.da_rec.font_size == 0); - fontsize = variable - ? (info->multiline ? 14.0 : floor(height)) - : info->font_rec.da_rec.font_size; - - info->font_rec.da_rec.font_size = fontsize; - - measure_ascent_descent(doc, &info->font_rec, text, &ascent, &descent); - - if (info->multiline) - { - text_splitter splitter; - - text_splitter_init(&splitter, &info->font_rec, text, width, height, variable); - - while (!splitter.done) - { - /* Try a layout pass */ - int line = 0; - - fz_drop_buffer(ctx, fztmp); - fztmp = NULL; - fztmp = fz_new_buffer(ctx, 0); - - text_splitter_start_pass(&splitter); - - /* Layout unscaled text to a scaled-up width, so that - * the scaled-down text will fit the unscaled width */ - - while (!splitter.done && line < splitter.max_lines) - { - /* Layout a line */ - text_splitter_start_line(&splitter); - - while (!splitter.done && text_splitter_layout(ctx, &splitter)) - { - if (splitter.text[splitter.text_start] != ' ') - { - float x, y; - char *word = text+splitter.text_start; - int wordlen = splitter.text_end-splitter.text_start; - - text_splitter_move(&splitter, -line*fontsize, &x, &y); - fzbuf_print_text_word(ctx, fztmp, x, y, word, wordlen); - } - } - - line ++; - } - - if (!splitter.done) - text_splitter_retry(&splitter); - } - - fzbuf = fz_new_buffer(ctx, 0); - - tm.a = splitter.scale; - tm.b = 0.0; - tm.c = 0.0; - tm.d = splitter.scale; - tm.e = rect.x0; - tm.f = rect.y1 - (1.0+ascent-descent)*fontsize*splitter.scale/2.0; - - fzbuf_print_text_start(ctx, fzbuf, &rect, info->col, &info->font_rec, &tm); - - fz_buffer_cat(ctx, fzbuf, fztmp); - - fzbuf_print_text_end(ctx, fzbuf); - } - else if (info->comb) - { - int i, n = fz_mini((int)strlen(text), info->max_len); - float comb_width = full_width/info->max_len; - float char_width = pdf_text_stride(ctx, info->font_rec.font, fontsize, (unsigned char *)"M", 1, FLT_MAX, NULL); - float init_skip = (comb_width - char_width)/2.0; - - fz_translate(&tm, rect.x0, rect.y1 - (height+(ascent-descent)*fontsize)/2.0); - - fzbuf = fz_new_buffer(ctx, 0); - - fzbuf_print_text_start(ctx, fzbuf, &rect, info->col, &info->font_rec, &tm); - - for (i = 0; i < n; i++) - fzbuf_print_text_word(ctx, fzbuf, i == 0 ? init_skip : comb_width, 0.0, text+i, 1); - - fzbuf_print_text_end(ctx, fzbuf); - } - else - { - if (oldtm) - { - tm = *oldtm; - } - else - { - fz_translate(&tm, rect.x0, rect.y1 - (height+(ascent-descent)*fontsize)/2.0); - - switch (info->q) - { - case Q_Right: tm.e += width; break; - case Q_Cent: tm.e += width/2; break; - } - } - - if (variable) - { - measure_text(doc, &info->font_rec, &tm, text, &tbox); - - if (tbox.x1 - tbox.x0 > width) - { - /* Scale the text to fit but use the same offset - * to keep the baseline constant */ - tm.a *= width / (tbox.x1 - tbox.x0); - tm.d *= width / (tbox.x1 - tbox.x0); - } - } - - fzbuf = create_aligned_text_buffer(doc, &rect, info, &tm, text); - } - } - fz_always(ctx) - { - fz_drop_buffer(ctx, fztmp); - } - fz_catch(ctx) - { - fz_drop_buffer(ctx, fzbuf); - fz_rethrow(ctx); - } - - return fzbuf; -} - -static void update_marked_content(pdf_document *doc, pdf_xobject *form, fz_buffer *fzbuf) -{ - fz_context *ctx = doc->ctx; - pdf_token tok; - pdf_lexbuf lbuf; - fz_stream *str_outer = NULL; - fz_stream *str_inner = NULL; - unsigned char *buf; - int len; - fz_buffer *newbuf = NULL; - - pdf_lexbuf_init(ctx, &lbuf, PDF_LEXBUF_SMALL); - - fz_var(str_outer); - fz_var(str_inner); - fz_var(newbuf); - fz_try(ctx) - { - int bmc_found; - int first = 1; - - newbuf = fz_new_buffer(ctx, 0); - str_outer = pdf_open_stream(doc, pdf_to_num(form->contents), pdf_to_gen(form->contents)); - len = fz_buffer_storage(ctx, fzbuf, &buf); - str_inner = fz_open_memory(ctx, buf, len); - - /* Copy the existing appearance stream to newbuf while looking for BMC */ - for (tok = pdf_lex(str_outer, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_outer, &lbuf)) - { - if (first) - first = 0; - else - fz_buffer_printf(ctx, newbuf, " "); - - pdf_print_token(ctx, newbuf, tok, &lbuf); - if (tok == PDF_TOK_KEYWORD && !strcmp(lbuf.scratch, "BMC")) - break; - } - - bmc_found = (tok != PDF_TOK_EOF); - - if (bmc_found) - { - /* Drop Tx BMC from the replacement appearance stream */ - (void)pdf_lex(str_inner, &lbuf); - (void)pdf_lex(str_inner, &lbuf); - } - - /* Copy the replacement appearance stream to newbuf */ - for (tok = pdf_lex(str_inner, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_inner, &lbuf)) - { - fz_buffer_printf(ctx, newbuf, " "); - pdf_print_token(ctx, newbuf, tok, &lbuf); - } - - if (bmc_found) - { - /* Drop the rest of the existing appearance stream until EMC found */ - for (tok = pdf_lex(str_outer, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_outer, &lbuf)) - { - if (tok == PDF_TOK_KEYWORD && !strcmp(lbuf.scratch, "EMC")) - break; - } - - /* Copy the rest of the existing appearance stream to newbuf */ - for (tok = pdf_lex(str_outer, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str_outer, &lbuf)) - { - fz_buffer_printf(ctx, newbuf, " "); - pdf_print_token(ctx, newbuf, tok, &lbuf); - } - } - - /* Use newbuf in place of the existing appearance stream */ - pdf_update_xobject_contents(doc, form, newbuf); - } - fz_always(ctx) - { - fz_close(str_outer); - fz_close(str_inner); - fz_drop_buffer(ctx, newbuf); - pdf_lexbuf_fin(&lbuf); - } - fz_catch(ctx) - { - fz_rethrow(ctx); - } -} - -static int get_matrix(pdf_document *doc, pdf_xobject *form, int q, fz_matrix *mt) -{ - fz_context *ctx = doc->ctx; - int found = 0; - pdf_lexbuf lbuf; - fz_stream *str; - - str = pdf_open_stream(doc, pdf_to_num(form->contents), pdf_to_gen(form->contents)); - - pdf_lexbuf_init(ctx, &lbuf, PDF_LEXBUF_SMALL); - - fz_try(ctx) - { - int tok; - float coefs[MATRIX_COEFS]; - int coef_i = 0; - - /* Look for the text matrix Tm in the stream */ - for (tok = pdf_lex(str, &lbuf); tok != PDF_TOK_EOF; tok = pdf_lex(str, &lbuf)) - { - if (tok == PDF_TOK_INT || tok == PDF_TOK_REAL) - { - if (coef_i >= MATRIX_COEFS) - { - int i; - for (i = 0; i < MATRIX_COEFS-1; i++) - coefs[i] = coefs[i+1]; - - coef_i = MATRIX_COEFS-1; - } - - coefs[coef_i++] = tok == PDF_TOK_INT ? lbuf.i : lbuf.f; - } - else - { - if (tok == PDF_TOK_KEYWORD && !strcmp(lbuf.scratch, "Tm") && coef_i == MATRIX_COEFS) - { - found = 1; - mt->a = coefs[0]; - mt->b = coefs[1]; - mt->c = coefs[2]; - mt->d = coefs[3]; - mt->e = coefs[4]; - mt->f = coefs[5]; - } - - coef_i = 0; - } - } - - if (found) - { - fz_rect bbox; - pdf_to_rect(ctx, pdf_dict_gets(form->contents, "BBox"), &bbox); - - switch (q) - { - case Q_Left: - mt->e = bbox.x0 + 1; - break; - - case Q_Cent: - mt->e = (bbox.x1 - bbox.x0) / 2; - break; - - case Q_Right: - mt->e = bbox.x1 - 1; - break; - } - } - } - fz_always(ctx) - { - fz_close(str); - pdf_lexbuf_fin(&lbuf); - } - fz_catch(ctx) - { - fz_rethrow(ctx); - } - - return found; -} - static void update_field_value(pdf_document *doc, pdf_obj *obj, char *text) { fz_context *ctx = doc->ctx; @@ -1065,356 +127,6 @@ static void update_field_value(pdf_document *doc, pdf_obj *obj, char *text) pdf_field_mark_dirty(doc, obj); } -static pdf_xobject *load_or_create_form(pdf_document *doc, pdf_obj *obj, fz_rect *rect) -{ - fz_context *ctx = doc->ctx; - pdf_obj *ap = NULL; - fz_matrix mat; - int rot; - pdf_obj *formobj = NULL; - pdf_xobject *form = NULL; - char *dn = "N"; - fz_buffer *fzbuf = NULL; - int create_form = 0; - - fz_var(formobj); - fz_var(form); - fz_var(fzbuf); - fz_try(ctx) - { - rot = pdf_to_int(pdf_dict_getp(obj, "MK/R")); - pdf_to_rect(ctx, pdf_dict_gets(obj, "Rect"), rect); - rect->x1 -= rect->x0; - rect->y1 -= rect->y0; - rect->x0 = rect->y0 = 0; - account_for_rot(rect, &mat, rot); - - ap = pdf_dict_gets(obj, "AP"); - if (ap == NULL) - { - ap = pdf_new_dict(doc, 1); - pdf_dict_puts_drop(obj, "AP", ap); - } - - formobj = pdf_dict_gets(ap, dn); - if (formobj == NULL) - { - formobj = pdf_new_xobject(doc, rect, &mat); - pdf_dict_puts_drop(ap, dn, formobj); - create_form = 1; - } - - form = pdf_load_xobject(doc, formobj); - if (create_form) - { - fzbuf = fz_new_buffer(ctx, 1); - pdf_update_xobject_contents(doc, form, fzbuf); - } - - copy_resources(form->resources, pdf_get_inheritable(doc, obj, "DR")); - } - fz_always(ctx) - { - fz_drop_buffer(ctx, fzbuf); - } - fz_catch(ctx) - { - pdf_drop_xobject(ctx, form); - fz_rethrow(ctx); - } - - return form; -} - -static char *to_font_encoding(fz_context *ctx, pdf_font_desc *font, char *utf8) -{ - int i; - int needs_converting = 0; - - /* Temporay partial solution. We are using a slow lookup in the conversion - * below, so we avoid performing the conversion unnecessarily. We check for - * top-bit-set chars, and convert only if they are present. We should also - * check that the font encoding is one that agrees with utf8 from 0 to 7f, - * but for now we get away without doing so. This is after all an improvement - * on just strdup */ - for (i = 0; utf8[i] != '\0'; i++) - { - if (utf8[i] & 0x80) - needs_converting = 1; - } - - /* Even if we need to convert, we cannot do so if the font has no cid_to_ucs mapping */ - if (needs_converting && font->cid_to_ucs) - { - char *buf = fz_malloc(ctx, strlen(utf8) + 1); - char *bufp = buf; - - fz_try(ctx) - { - while(*utf8) - { - if (*utf8 & 0x80) - { - int rune; - - utf8 += fz_chartorune(&rune, utf8); - - /* Slow search for the cid that maps to the unicode value held in 'rune" */ - for (i = 0; i < font->cid_to_ucs_len && font->cid_to_ucs[i] != rune; i++) - ; - - /* If found store the cid */ - if (i < font->cid_to_ucs_len) - *bufp++ = i; - } - else - { - *bufp++ = *utf8++; - } - } - - *bufp = '\0'; - } - fz_catch(ctx) - { - fz_free(ctx, buf); - fz_rethrow(ctx); - } - - return buf; - } - else - { - /* If either no conversion is needed or the font has no cid_to_ucs - * mapping then leave unconverted, although in the latter case the result - * is likely incorrect */ - return fz_strdup(ctx, utf8); - } -} - -static void update_text_appearance(pdf_document *doc, pdf_obj *obj, char *eventValue) -{ - fz_context *ctx = doc->ctx; - text_widget_info info; - pdf_xobject *form = NULL; - fz_buffer *fzbuf = NULL; - fz_matrix tm; - fz_rect rect; - int has_tm; - char *text = NULL; - - memset(&info, 0, sizeof(info)); - - fz_var(info); - fz_var(form); - fz_var(fzbuf); - fz_var(text); - fz_try(ctx) - { - get_text_widget_info(doc, obj, &info); - - if (eventValue) - text = to_font_encoding(ctx, info.font_rec.font, eventValue); - else - text = pdf_field_value(doc, obj); - - form = load_or_create_form(doc, obj, &rect); - - has_tm = get_matrix(doc, form, info.q, &tm); - fzbuf = create_text_appearance(doc, &form->bbox, has_tm ? &tm : NULL, &info, - text?text:""); - update_marked_content(doc, form, fzbuf); - } - fz_always(ctx) - { - fz_free(ctx, text); - pdf_drop_xobject(ctx, form); - fz_drop_buffer(ctx, fzbuf); - font_info_fin(ctx, &info.font_rec); - } - fz_catch(ctx) - { - fz_warn(ctx, "update_text_appearance failed"); - } -} - -static void update_combobox_appearance(pdf_document *doc, pdf_obj *obj) -{ - fz_context *ctx = doc->ctx; - text_widget_info info; - pdf_xobject *form = NULL; - fz_buffer *fzbuf = NULL; - fz_matrix tm; - fz_rect rect; - int has_tm; - pdf_obj *val; - char *text; - - memset(&info, 0, sizeof(info)); - - fz_var(info); - fz_var(form); - fz_var(fzbuf); - fz_try(ctx) - { - get_text_widget_info(doc, obj, &info); - - val = pdf_get_inheritable(doc, obj, "V"); - - if (pdf_is_array(val)) - val = pdf_array_get(val, 0); - - text = pdf_to_str_buf(val); - - if (!text) - text = ""; - - form = load_or_create_form(doc, obj, &rect); - - has_tm = get_matrix(doc, form, info.q, &tm); - fzbuf = create_text_appearance(doc, &form->bbox, has_tm ? &tm : NULL, &info, - text?text:""); - update_marked_content(doc, form, fzbuf); - } - fz_always(ctx) - { - pdf_drop_xobject(ctx, form); - fz_drop_buffer(ctx, fzbuf); - font_info_fin(ctx, &info.font_rec); - } - fz_catch(ctx) - { - fz_warn(ctx, "update_text_appearance failed"); - } -} - -static int get_border_style(pdf_obj *obj) -{ - char *sname = pdf_to_name(pdf_dict_getp(obj, "BS/S")); - - if (!strcmp(sname, "D")) - return BS_Dashed; - else if (!strcmp(sname, "B")) - return BS_Beveled; - else if (!strcmp(sname, "I")) - return BS_Inset; - else if (!strcmp(sname, "U")) - return BS_Underline; - else - return BS_Solid; -} - -static float get_border_width(pdf_obj *obj) -{ - float w = pdf_to_real(pdf_dict_getp(obj, "BS/W")); - return w == 0.0 ? 1.0 : w; -} - -static void update_pushbutton_appearance(pdf_document *doc, pdf_obj *obj) -{ - fz_context *ctx = doc->ctx; - fz_rect rect; - pdf_xobject *form = NULL; - fz_buffer *fzbuf = NULL; - pdf_obj *tobj = NULL; - font_info font_rec; - int bstyle; - float bwidth; - float btotal; - - memset(&font_rec, 0, sizeof(font_rec)); - - fz_var(font_rec); - fz_var(form); - fz_var(fzbuf); - fz_try(ctx) - { - form = load_or_create_form(doc, obj, &rect); - fzbuf = fz_new_buffer(ctx, 0); - tobj = pdf_dict_getp(obj, "MK/BG"); - if (pdf_is_array(tobj)) - { - fzbuf_print_color(ctx, fzbuf, tobj, 0, 0.0); - fz_buffer_printf(ctx, fzbuf, fmt_re, - rect.x0, rect.y0, rect.x1, rect.y1); - fz_buffer_printf(ctx, fzbuf, fmt_f); - } - bstyle = get_border_style(obj); - bwidth = get_border_width(obj); - btotal = bwidth; - if (bstyle == BS_Beveled || bstyle == BS_Inset) - { - btotal += bwidth; - - if (bstyle == BS_Beveled) - fz_buffer_printf(ctx, fzbuf, fmt_g, 1.0); - else - fz_buffer_printf(ctx, fzbuf, fmt_g, 0.33); - fz_buffer_printf(ctx, fzbuf, fmt_m, bwidth, bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, bwidth, rect.y1 - bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - bwidth, rect.y1 - bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - 2 * bwidth, rect.y1 - 2 * bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, 2 * bwidth, rect.y1 - 2 * bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, 2 * bwidth, 2 * bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_f); - if (bstyle == BS_Beveled) - fzbuf_print_color(ctx, fzbuf, tobj, 0, -0.25); - else - fz_buffer_printf(ctx, fzbuf, fmt_g, 0.66); - fz_buffer_printf(ctx, fzbuf, fmt_m, rect.x1 - bwidth, rect.y1 - bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - bwidth, bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, bwidth, bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, 2 * bwidth, 2 * bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - 2 * bwidth, 2 * bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_l, rect.x1 - 2 * bwidth, rect.y1 - 2 * bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_f); - } - - tobj = pdf_dict_getp(obj, "MK/BC"); - if (tobj) - { - fzbuf_print_color(ctx, fzbuf, tobj, 1, 0.0); - fz_buffer_printf(ctx, fzbuf, fmt_w, bwidth); - fz_buffer_printf(ctx, fzbuf, fmt_re, - bwidth/2, bwidth/2, - rect.x1 -bwidth/2, rect.y1 - bwidth/2); - fz_buffer_printf(ctx, fzbuf, fmt_s); - } - - tobj = pdf_dict_getp(obj, "MK/CA"); - if (tobj) - { - fz_rect clip = rect; - fz_rect bounds; - fz_matrix mat; - char *da = pdf_to_str_buf(pdf_get_inheritable(doc, obj, "DA")); - char *text = pdf_to_str_buf(tobj); - - clip.x0 += btotal; - clip.y0 += btotal; - clip.x1 -= btotal; - clip.y1 -= btotal; - - get_font_info(doc, form->resources, da, &font_rec); - measure_text(doc, &font_rec, &fz_identity, text, &bounds); - fz_translate(&mat, (rect.x1 - bounds.x1)/2, (rect.y1 - bounds.y1)/2); - fzbuf_print_text(ctx, fzbuf, &clip, NULL, &font_rec, &mat, text); - } - - pdf_update_xobject_contents(doc, form, fzbuf); - } - fz_always(ctx) - { - font_info_fin(ctx, &font_rec); - fz_drop_buffer(ctx, fzbuf); - pdf_drop_xobject(ctx, form); - } - fz_catch(ctx) - { - fz_rethrow(ctx); - } -} - static pdf_obj *find_field(pdf_obj *dict, char *name, int len) { pdf_obj *field; @@ -1706,46 +418,6 @@ static void execute_action(pdf_document *doc, pdf_obj *obj, pdf_obj *a) } } -static void update_text_markup_appearance(pdf_document *doc, pdf_annot *annot, fz_annot_type type) -{ - float color[3]; - float alpha; - float line_height; - float line_thickness; - - switch (type) - { - case FZ_ANNOT_HIGHLIGHT: - color[0] = 1.0; - color[1] = 1.0; - color[2] = 0.0; - alpha = 0.5; - line_thickness = 1.0; - line_height = 0.5; - break; - case FZ_ANNOT_UNDERLINE: - color[0] = 0.0; - color[1] = 0.0; - color[2] = 1.0; - alpha = 1.0; - line_thickness = LINE_THICKNESS; - line_height = UNDERLINE_HEIGHT; - break; - case FZ_ANNOT_STRIKEOUT: - color[0] = 1.0; - color[1] = 0.0; - color[2] = 0.0; - alpha = 1.0; - line_thickness = LINE_THICKNESS; - line_height = STRIKE_HEIGHT; - break; - default: - return; - } - - pdf_set_markup_appearance(doc, annot, color, alpha, line_thickness, line_height); -} - void pdf_update_appearance(pdf_document *doc, pdf_annot *annot) { pdf_obj *obj = annot->obj; @@ -1770,30 +442,30 @@ void pdf_update_appearance(pdf_document *doc, pdf_annot *annot) pdf_js_setup_event(doc->js, &e); execute_action(doc, obj, formatting); /* Update appearance from JS event.value */ - update_text_appearance(doc, obj, pdf_js_get_event(doc->js)->value); + pdf_update_text_appearance(doc, obj, pdf_js_get_event(doc->js)->value); } else { /* Update appearance from field value */ - update_text_appearance(doc, obj, NULL); + pdf_update_text_appearance(doc, obj, NULL); } } break; case PDF_WIDGET_TYPE_PUSHBUTTON: - update_pushbutton_appearance(doc, obj); + pdf_update_pushbutton_appearance(doc, obj); break; case PDF_WIDGET_TYPE_LISTBOX: case PDF_WIDGET_TYPE_COMBOBOX: /* Treating listbox and combobox identically for now, * and the behaviour is most appropriate for a combobox */ - update_combobox_appearance(doc, obj); + pdf_update_combobox_appearance(doc, obj); break; } break; case FZ_ANNOT_STRIKEOUT: case FZ_ANNOT_UNDERLINE: case FZ_ANNOT_HIGHLIGHT: - update_text_markup_appearance(doc, annot, type); + pdf_update_text_markup_appearance(doc, annot, type); break; case FZ_ANNOT_INK: pdf_set_ink_appearance(doc, annot); @@ -2556,7 +1228,7 @@ void pdf_field_set_fill_color(pdf_document *doc, pdf_obj *field, pdf_obj *col) void pdf_field_set_text_color(pdf_document *doc, pdf_obj *field, pdf_obj *col) { fz_context *ctx = doc->ctx; - da_info di; + pdf_da_info di; fz_buffer *fzbuf = NULL; char *da = pdf_to_str_buf(pdf_get_inheritable(doc, field, "DA")); unsigned char *buf; @@ -2572,7 +1244,7 @@ void pdf_field_set_text_color(pdf_document *doc, pdf_obj *field, pdf_obj *col) { int i; - parse_da(ctx, da, &di); + pdf_parse_da(ctx, da, &di); di.col_size = pdf_array_len(col); len = fz_mini(di.col_size, nelem(di.col)); @@ -2580,7 +1252,7 @@ void pdf_field_set_text_color(pdf_document *doc, pdf_obj *field, pdf_obj *col) di.col[i] = pdf_to_real(pdf_array_get(col, i)); fzbuf = fz_new_buffer(ctx, 0); - fzbuf_print_da(ctx, fzbuf, &di); + pdf_fzbuf_print_da(ctx, fzbuf, &di); len = fz_buffer_storage(ctx, fzbuf, &buf); daobj = pdf_new_string(doc, (char *)buf, len); pdf_dict_puts(field, "DA", daobj); @@ -2588,7 +1260,7 @@ void pdf_field_set_text_color(pdf_document *doc, pdf_obj *field, pdf_obj *col) } fz_always(ctx) { - da_info_fin(ctx, &di); + pdf_da_info_fin(ctx, &di); fz_drop_buffer(ctx, fzbuf); pdf_drop_obj(daobj); } |