summaryrefslogtreecommitdiff
path: root/draw/draw_device.c
diff options
context:
space:
mode:
Diffstat (limited to 'draw/draw_device.c')
-rw-r--r--draw/draw_device.c172
1 files changed, 166 insertions, 6 deletions
diff --git a/draw/draw_device.c b/draw/draw_device.c
index 67b766ca..46a3fa2b 100644
--- a/draw/draw_device.c
+++ b/draw/draw_device.c
@@ -18,6 +18,7 @@ struct fz_draw_device_s
fz_bbox scissor;
int top;
+ int blendmode;
struct {
fz_bbox scissor;
fz_pixmap *dest;
@@ -32,6 +33,97 @@ struct fz_draw_device_s
} stack[STACK_SIZE];
};
+static void fz_knockout_begin(void *user)
+{
+ fz_draw_device *dev = user;
+ fz_bbox bbox;
+ fz_pixmap *dest, *shape;
+
+ if ((dev->blendmode & FZ_BLEND_KNOCKOUT) == 0)
+ return;
+
+ if (dev->top == STACK_SIZE)
+ {
+ fz_warn("assert: too many buffers on stack");
+ return;
+ }
+
+ bbox = fz_bound_pixmap(dev->dest);
+ bbox = fz_intersect_bbox(bbox, dev->scissor);
+ dest = fz_new_pixmap_with_rect(dev->dest->colorspace, bbox);
+
+ if (dev->blendmode & FZ_BLEND_ISOLATED)
+ {
+ fz_clear_pixmap(dest);
+ shape = dev->shape;
+ }
+ else
+ {
+ fz_pixmap *prev;
+ int i = dev->top;
+ do {
+ prev = dev->stack[--i].dest;
+ } while (prev == NULL);
+ shape = fz_new_pixmap_with_rect(NULL, bbox);
+ fz_clear_pixmap(shape);
+ fz_copy_pixmap_rect(dest, prev, bbox);
+ }
+ dev->stack[dev->top].blendmode = dev->blendmode;
+ dev->stack[dev->top].scissor = dev->scissor;
+ dev->stack[dev->top].dest = dev->dest;
+ dev->stack[dev->top].shape = dev->shape;
+ dev->top++;
+
+ dev->scissor = bbox;
+ dev->dest = dest;
+ dev->shape = shape;
+ dev->blendmode &= ~FZ_BLEND_MODEMASK;
+}
+
+static void fz_knockout_end(void *user)
+{
+ fz_draw_device *dev = user;
+ fz_pixmap *group = dev->dest;
+ fz_pixmap *shape = dev->shape;
+ int blendmode;
+ int isolated;
+
+ if ((dev->blendmode & FZ_BLEND_KNOCKOUT) == 0)
+ return;
+
+ if (dev->top == STACK_SIZE)
+ {
+ fz_warn("assert: too many buffers on stack");
+ return;
+ }
+
+ if (dev->top > 0)
+ {
+ dev->top--;
+ blendmode = dev->blendmode & FZ_BLEND_MODEMASK;
+ isolated = dev->blendmode & FZ_BLEND_ISOLATED;
+ dev->blendmode = dev->stack[dev->top].blendmode;
+ dev->shape = dev->stack[dev->top].shape;
+ dev->dest = dev->stack[dev->top].dest;
+ dev->scissor = dev->stack[dev->top].scissor;
+
+ if ((blendmode == 0) && (shape == NULL))
+ fz_paint_pixmap(dev->dest, group, 255);
+ else
+ fz_blend_pixmap(dev->dest, group, 255, blendmode, isolated, shape);
+
+ fz_drop_pixmap(group);
+ if (shape != dev->shape)
+ {
+ if (dev->shape)
+ {
+ fz_paint_pixmap(dev->shape, shape, 255);
+ }
+ fz_drop_pixmap(shape);
+ }
+ }
+}
+
static void
fz_draw_fill_path(void *user, fz_path *path, int even_odd, fz_matrix ctm,
fz_colorspace *colorspace, float *color, float alpha)
@@ -55,6 +147,9 @@ fz_draw_fill_path(void *user, fz_path *path, int even_odd, fz_matrix ctm,
if (fz_is_empty_rect(bbox))
return;
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
fz_convert_color(colorspace, color, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
@@ -70,6 +165,9 @@ fz_draw_fill_path(void *user, fz_path *path, int even_odd, fz_matrix ctm,
colorbv[0] = 255;
fz_scan_convert(dev->gel, even_odd, bbox, dev->shape, colorbv);
}
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_end(dev);
}
static void
@@ -102,6 +200,9 @@ fz_draw_stroke_path(void *user, fz_path *path, fz_stroke_state *stroke, fz_matri
if (fz_is_empty_rect(bbox))
return;
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
fz_convert_color(colorspace, color, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
@@ -120,6 +221,9 @@ fz_draw_stroke_path(void *user, fz_path *path, fz_stroke_state *stroke, fz_matri
colorbv[0] = 255;
fz_scan_convert(dev->gel, 0, bbox, dev->shape, colorbv);
}
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_end(dev);
}
static void
@@ -154,6 +258,7 @@ fz_draw_clip_path(void *user, fz_path *path, fz_rect *rect, int even_odd, fz_mat
dev->stack[dev->top].mask = NULL;
dev->stack[dev->top].dest = NULL;
dev->stack[dev->top].shape = dev->shape;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = bbox;
dev->top++;
return;
@@ -177,6 +282,7 @@ fz_draw_clip_path(void *user, fz_path *path, fz_rect *rect, int even_odd, fz_mat
dev->stack[dev->top].mask = mask;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
@@ -234,6 +340,7 @@ fz_draw_clip_stroke_path(void *user, fz_path *path, fz_rect *rect, fz_stroke_sta
dev->stack[dev->top].mask = mask;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
@@ -289,6 +396,9 @@ fz_draw_fill_text(void *user, fz_text *text, fz_matrix ctm,
fz_pixmap *glyph;
int i, x, y, gid;
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
fz_convert_color(colorspace, color, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
@@ -320,6 +430,9 @@ fz_draw_fill_text(void *user, fz_text *text, fz_matrix ctm,
fz_drop_pixmap(glyph);
}
}
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_end(dev);
}
static void
@@ -334,6 +447,9 @@ fz_draw_stroke_text(void *user, fz_text *text, fz_stroke_state *stroke, fz_matri
fz_pixmap *glyph;
int i, x, y, gid;
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
fz_convert_color(colorspace, color, model, colorfv);
for (i = 0; i < model->n; i++)
colorbv[i] = colorfv[i] * 255;
@@ -364,6 +480,9 @@ fz_draw_stroke_text(void *user, fz_text *text, fz_stroke_state *stroke, fz_matri
fz_drop_pixmap(glyph);
}
}
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_end(dev);
}
static void
@@ -417,6 +536,7 @@ fz_draw_clip_text(void *user, fz_text *text, fz_matrix ctm, int accumulate)
dev->stack[dev->top].mask = mask;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
@@ -494,6 +614,7 @@ fz_draw_clip_stroke_text(void *user, fz_text *text, fz_stroke_state *stroke, fz_
dev->stack[dev->top].mask = mask;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
@@ -566,6 +687,9 @@ fz_draw_fill_shade(void *user, fz_shade *shade, fz_matrix ctm, float alpha)
fz_clear_pixmap(dest);
}
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
if (shade->use_background)
{
unsigned char *s;
@@ -607,6 +731,9 @@ fz_draw_fill_shade(void *user, fz_shade *shade, fz_matrix ctm, float alpha)
fz_paint_pixmap(dev->dest, dest, alpha * 255);
fz_drop_pixmap(dest);
}
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_end(dev);
}
static fz_pixmap *
@@ -670,6 +797,9 @@ fz_draw_fill_image(void *user, fz_pixmap *image, fz_matrix ctm, float alpha)
/* convert images with fewer components (gray->rgb after scaling */
/* convert images with expensive colorspace transforms after scaling */
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
after = 0;
if (image->colorspace == fz_device_gray)
after = 1;
@@ -719,6 +849,9 @@ fz_draw_fill_image(void *user, fz_pixmap *image, fz_matrix ctm, float alpha)
fz_drop_pixmap(scaled);
if (converted)
fz_drop_pixmap(converted);
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_end(dev);
}
static void
@@ -736,6 +869,9 @@ fz_draw_fill_image_mask(void *user, fz_pixmap *image, fz_matrix ctm,
if (image->w == 0 || image->h == 0)
return;
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
dx = sqrtf(ctm.a * ctm.a + ctm.b * ctm.b);
dy = sqrtf(ctm.c * ctm.c + ctm.d * ctm.d);
if (dx < image->w && dy < image->h)
@@ -762,6 +898,9 @@ fz_draw_fill_image_mask(void *user, fz_pixmap *image, fz_matrix ctm,
if (scaled)
fz_drop_pixmap(scaled);
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
}
static void
@@ -785,6 +924,7 @@ fz_draw_clip_image_mask(void *user, fz_pixmap *image, fz_rect *rect, fz_matrix c
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].mask = NULL;
dev->stack[dev->top].dest = NULL;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = fz_empty_bbox;
dev->top++;
return;
@@ -833,6 +973,7 @@ fz_draw_clip_image_mask(void *user, fz_pixmap *image, fz_rect *rect, fz_matrix c
dev->stack[dev->top].mask = mask;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
@@ -851,6 +992,7 @@ fz_draw_pop_clip(void *user)
mask = dev->stack[dev->top].mask;
dest = dev->stack[dev->top].dest;
shape = dev->stack[dev->top].shape;
+ dev->blendmode = dev->stack[dev->top].blendmode;
/* We can get here with mask == NULL if the clipping actually
* resolved to a rectangle earlier. In this case, we will
@@ -912,7 +1054,7 @@ fz_draw_begin_mask(void *user, fz_rect rect, int luminosity, fz_colorspace *colo
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].luminosity = luminosity;
dev->stack[dev->top].shape = dev->shape;
- /* FIXME: More shape stuff? */
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->top++;
dev->scissor = bbox;
@@ -955,6 +1097,7 @@ fz_draw_end_mask(void *user)
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].mask = temp;
dev->stack[dev->top].dest = dev->dest;
+ dev->stack[dev->top].blendmode = dev->blendmode;
/* If we have a shape, then it'll need to be masked with the
* clip mask when we pop. So create a new shape now. */
if (dev->shape)
@@ -983,6 +1126,9 @@ fz_draw_begin_group(void *user, fz_rect rect, int isolated, int knockout, int bl
return;
}
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
bbox = fz_round_rect(rect);
bbox = fz_intersect_bbox(bbox, dev->scissor);
dest = fz_new_pixmap_with_rect(model, bbox);
@@ -1000,7 +1146,7 @@ fz_draw_begin_group(void *user, fz_rect rect, int isolated, int knockout, int bl
}
dev->stack[dev->top].alpha = alpha;
- dev->stack[dev->top].blendmode = blendmode | (isolated ? FZ_BLEND_ISOLATED : 0) | (knockout ? FZ_BLEND_KNOCKOUT : 0);
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
@@ -1009,6 +1155,7 @@ fz_draw_begin_group(void *user, fz_rect rect, int isolated, int knockout, int bl
dev->scissor = bbox;
dev->dest = dest;
dev->shape = shape;
+ dev->blendmode = blendmode | (isolated ? FZ_BLEND_ISOLATED : 0) | (knockout ? FZ_BLEND_KNOCKOUT : 0);
}
static void
@@ -1018,16 +1165,16 @@ fz_draw_end_group(void *user)
fz_pixmap *group = dev->dest;
fz_pixmap *shape = dev->shape;
int blendmode;
- int isolated, knockout;
+ int isolated;
float alpha;
if (dev->top > 0)
{
dev->top--;
alpha = dev->stack[dev->top].alpha;
- blendmode = dev->stack[dev->top].blendmode & FZ_BLEND_MODEMASK;
- isolated = dev->stack[dev->top].blendmode & FZ_BLEND_ISOLATED;
- knockout = dev->stack[dev->top].blendmode & FZ_BLEND_KNOCKOUT;
+ blendmode = dev->blendmode & FZ_BLEND_MODEMASK;
+ isolated = dev->blendmode & FZ_BLEND_ISOLATED;
+ dev->blendmode = dev->stack[dev->top].blendmode;
dev->shape = dev->stack[dev->top].shape;
dev->dest = dev->stack[dev->top].dest;
dev->scissor = dev->stack[dev->top].scissor;
@@ -1047,6 +1194,9 @@ fz_draw_end_group(void *user)
fz_drop_pixmap(shape);
}
}
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_end(dev);
}
static void
@@ -1066,6 +1216,9 @@ fz_draw_begin_tile(void *user, fz_rect area, fz_rect view, float xstep, float ys
return;
}
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
+
bbox = fz_round_rect(fz_transform_rect(ctm, view));
dest = fz_new_pixmap_with_rect(model, bbox);
fz_clear_pixmap(dest);
@@ -1073,6 +1226,7 @@ fz_draw_begin_tile(void *user, fz_rect area, fz_rect view, float xstep, float ys
dev->stack[dev->top].scissor = dev->scissor;
dev->stack[dev->top].dest = dev->dest;
dev->stack[dev->top].shape = dev->shape;
+ dev->stack[dev->top].blendmode = dev->blendmode;
dev->stack[dev->top].xstep = xstep;
dev->stack[dev->top].ystep = ystep;
dev->stack[dev->top].area = area;
@@ -1102,6 +1256,8 @@ fz_draw_end_tile(void *user)
ctm = dev->stack[dev->top].ctm;
dev->scissor = dev->stack[dev->top].scissor;
dev->dest = dev->stack[dev->top].dest;
+ dev->blendmode = dev->stack[dev->top].blendmode;
+
x0 = floorf(area.x0 / xstep);
y0 = floorf(area.y0 / ystep);
@@ -1124,6 +1280,9 @@ fz_draw_end_tile(void *user)
fz_drop_pixmap(tile);
}
+
+ if (dev->blendmode & FZ_BLEND_KNOCKOUT)
+ fz_knockout_begin(dev);
}
static void
@@ -1147,6 +1306,7 @@ fz_new_draw_device(fz_glyph_cache *cache, fz_pixmap *dest)
ddev->dest = dest;
ddev->shape = NULL;
ddev->top = 0;
+ ddev->blendmode = 0;
ddev->scissor.x0 = dest->x;
ddev->scissor.y0 = dest->y;
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-30 02:42:31 +0000