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#include "mupdf/fitz.h"
void *
fz_new_device(fz_context *ctx, int size)
{
return Memento_label(fz_calloc(ctx, 1, size), "fz_device");
}
void
fz_drop_device(fz_context *ctx, fz_device *dev)
{
if (dev == NULL)
return;
if (dev->drop_imp)
dev->drop_imp(ctx, dev);
fz_free(ctx, dev->container);
fz_free(ctx, dev);
}
void
fz_enable_device_hints(fz_context *ctx, fz_device *dev, int hints)
{
dev->hints |= hints;
}
void
fz_disable_device_hints(fz_context *ctx, fz_device *dev, int hints)
{
dev->hints &= ~hints;
}
void
fz_begin_page(fz_context *ctx, fz_device *dev, const fz_rect *rect, const fz_matrix *ctm)
{
if (dev->begin_page)
dev->begin_page(ctx, dev, rect, ctm);
}
void
fz_end_page(fz_context *ctx, fz_device *dev)
{
if (dev->end_page)
dev->end_page(ctx, dev);
}
static void
push_clip_stack(fz_context *ctx, fz_device *dev, const fz_rect *rect, int flags)
{
if (dev->container_len == dev->container_cap)
{
int newmax = dev->container_cap * 2;
if (newmax == 0)
newmax = 4;
dev->container = fz_resize_array(ctx, dev->container, newmax, sizeof(*dev->container));
dev->container_cap = newmax;
}
if (dev->container_len == 0)
dev->container[0].scissor = *rect;
else
{
dev->container[dev->container_len].scissor = dev->container[dev->container_len-1].scissor;
fz_intersect_rect(&dev->container[dev->container_len].scissor, rect);
}
dev->container[dev->container_len].flags = flags;
dev->container[dev->container_len].user = 0;
dev->container_len++;
}
static void
push_clip_stack_accumulate(fz_context *ctx, fz_device *dev, const fz_rect *rect, int accumulate)
{
if (accumulate <= 1)
{
dev->scissor_accumulator = *rect;
if (dev->container_len == dev->container_cap)
{
int newmax = dev->container_cap * 2;
if (newmax == 0)
newmax = 4;
dev->container = fz_resize_array(ctx, dev->container, newmax, sizeof(*dev->container));
dev->container_cap = newmax;
}
if (dev->container_len > 0)
dev->container[dev->container_len].scissor = dev->container[dev->container_len-1].scissor;
else
dev->container[dev->container_len].scissor = fz_infinite_rect;
fz_intersect_rect(&dev->container[dev->container_len].scissor, rect);
dev->container[dev->container_len].flags = fz_device_container_stack_is_clip_text;
dev->container[dev->container_len].user = 0;
dev->container_len++;
}
else
{
if (dev->container_len <= 0)
return;
fz_union_rect(&dev->scissor_accumulator, rect);
fz_intersect_rect(&dev->container[dev->container_len-1].scissor, &dev->scissor_accumulator);
}
}
static void
pop_clip_stack(fz_context *ctx, fz_device *dev)
{
if (dev->container_len > 0)
dev->container_len--;
}
void
fz_fill_path(fz_context *ctx, fz_device *dev, fz_path *path, int even_odd, const fz_matrix *ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
if (dev->error_depth)
return;
if (dev->fill_path)
dev->fill_path(ctx, dev, path, even_odd, ctm, colorspace, color, alpha);
}
void
fz_stroke_path(fz_context *ctx, fz_device *dev, fz_path *path, fz_stroke_state *stroke, const fz_matrix *ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
if (dev->error_depth)
return;
if (dev->stroke_path)
dev->stroke_path(ctx, dev, path, stroke, ctm, colorspace, color, alpha);
}
void
fz_clip_path(fz_context *ctx, fz_device *dev, fz_path *path, const fz_rect *rect, int even_odd, const fz_matrix *ctm)
{
if (dev->error_depth)
{
dev->error_depth++;
return;
}
fz_try(ctx)
{
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
{
if (rect == NULL)
{
fz_rect bbox;
fz_bound_path(ctx, path, NULL, ctm, &bbox);
push_clip_stack(ctx, dev, &bbox, fz_device_container_stack_is_clip_path);
}
else
push_clip_stack(ctx, dev, rect, fz_device_container_stack_is_clip_path);
}
if (dev->clip_path)
dev->clip_path(ctx, dev, path, rect, even_odd, ctm);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_clip_stroke_path(fz_context *ctx, fz_device *dev, fz_path *path, const fz_rect *rect, fz_stroke_state *stroke, const fz_matrix *ctm)
{
if (dev->error_depth)
{
dev->error_depth++;
return;
}
fz_try(ctx)
{
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
{
if (rect == NULL)
{
fz_rect bbox;
fz_bound_path(ctx, path, stroke, ctm, &bbox);
push_clip_stack(ctx, dev, &bbox, fz_device_container_stack_is_clip_stroke_path);
}
else
push_clip_stack(ctx, dev, rect, fz_device_container_stack_is_clip_stroke_path);
}
if (dev->clip_stroke_path)
dev->clip_stroke_path(ctx, dev, path, rect, stroke, ctm);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_fill_text(fz_context *ctx, fz_device *dev, fz_text *text, const fz_matrix *ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
if (dev->error_depth)
return;
if (dev->fill_text)
dev->fill_text(ctx, dev, text, ctm, colorspace, color, alpha);
}
void
fz_stroke_text(fz_context *ctx, fz_device *dev, fz_text *text, fz_stroke_state *stroke, const fz_matrix *ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
if (dev->error_depth)
return;
if (dev->stroke_text)
dev->stroke_text(ctx, dev, text, stroke, ctm, colorspace, color, alpha);
}
void
fz_clip_text(fz_context *ctx, fz_device *dev, fz_text *text, const fz_matrix *ctm, int accumulate)
{
if (dev->error_depth)
{
if (accumulate == 0 || accumulate == 1)
dev->error_depth++;
return;
}
fz_try(ctx)
{
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
{
fz_rect bbox;
fz_bound_text(ctx, text, NULL, ctm, &bbox);
push_clip_stack_accumulate(ctx, dev, &bbox, accumulate);
}
if (dev->clip_text)
dev->clip_text(ctx, dev, text, ctm, accumulate);
}
fz_catch(ctx)
{
if (accumulate == 2)
fz_rethrow(ctx);
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_clip_stroke_text(fz_context *ctx, fz_device *dev, fz_text *text, fz_stroke_state *stroke, const fz_matrix *ctm)
{
if (dev->error_depth)
{
dev->error_depth++;
return;
}
fz_try(ctx)
{
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
{
fz_rect bbox;
fz_bound_text(ctx, text, stroke, ctm, &bbox);
push_clip_stack(ctx, dev, &bbox, fz_device_container_stack_is_clip_stroke_text);
}
if (dev->clip_stroke_text)
dev->clip_stroke_text(ctx, dev, text, stroke, ctm);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_ignore_text(fz_context *ctx, fz_device *dev, fz_text *text, const fz_matrix *ctm)
{
if (dev->error_depth)
return;
if (dev->ignore_text)
dev->ignore_text(ctx, dev, text, ctm);
}
void
fz_pop_clip(fz_context *ctx, fz_device *dev)
{
if (dev->error_depth)
{
dev->error_depth--;
if (dev->error_depth == 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "%s", dev->errmess);
return;
}
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
pop_clip_stack(ctx, dev);
if (dev->pop_clip)
dev->pop_clip(ctx, dev);
}
void
fz_fill_shade(fz_context *ctx, fz_device *dev, fz_shade *shade, const fz_matrix *ctm, float alpha)
{
if (dev->error_depth)
return;
if (dev->fill_shade)
dev->fill_shade(ctx, dev, shade, ctm, alpha);
}
void
fz_fill_image(fz_context *ctx, fz_device *dev, fz_image *image, const fz_matrix *ctm, float alpha)
{
if (dev->error_depth)
return;
if (dev->fill_image)
dev->fill_image(ctx, dev, image, ctm, alpha);
}
void
fz_fill_image_mask(fz_context *ctx, fz_device *dev, fz_image *image, const fz_matrix *ctm,
fz_colorspace *colorspace, float *color, float alpha)
{
if (dev->error_depth)
return;
if (dev->fill_image_mask)
dev->fill_image_mask(ctx, dev, image, ctm, colorspace, color, alpha);
}
void
fz_clip_image_mask(fz_context *ctx, fz_device *dev, fz_image *image, const fz_rect *rect, const fz_matrix *ctm)
{
if (dev->error_depth)
{
dev->error_depth++;
return;
}
fz_try(ctx)
{
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
push_clip_stack(ctx, dev, rect, fz_device_container_stack_is_clip_image_mask);
if (dev->clip_image_mask)
dev->clip_image_mask(ctx, dev, image, rect, ctm);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_begin_mask(fz_context *ctx, fz_device *dev, const fz_rect *area, int luminosity, fz_colorspace *colorspace, float *bc)
{
if (dev->error_depth)
{
dev->error_depth++;
return;
}
fz_try(ctx)
{
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
push_clip_stack(ctx, dev, area, fz_device_container_stack_in_mask);
if (dev->begin_mask)
dev->begin_mask(ctx, dev, area, luminosity, colorspace, bc);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_end_mask(fz_context *ctx, fz_device *dev)
{
if (dev->error_depth)
{
/* Converts from mask to clip, so no change in stack depth */
return;
}
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
{
dev->container[dev->container_len-1].flags &= ~fz_device_container_stack_in_mask;
dev->container[dev->container_len-1].flags |= fz_device_container_stack_is_mask;
}
fz_try(ctx)
{
if (dev->end_mask)
dev->end_mask(ctx, dev);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_begin_group(fz_context *ctx, fz_device *dev, const fz_rect *area, int isolated, int knockout, int blendmode, float alpha)
{
if (dev->error_depth)
{
dev->error_depth++;
return;
}
fz_try(ctx)
{
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
push_clip_stack(ctx, dev, area, fz_device_container_stack_is_group);
if (dev->begin_group)
dev->begin_group(ctx, dev, area, isolated, knockout, blendmode, alpha);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
}
void
fz_end_group(fz_context *ctx, fz_device *dev)
{
if (dev->error_depth)
{
dev->error_depth--;
if (dev->error_depth == 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "%s", dev->errmess);
return;
}
if (dev->end_group)
dev->end_group(ctx, dev);
if (dev->hints & FZ_MAINTAIN_CONTAINER_STACK)
pop_clip_stack(ctx, dev);
}
void
fz_begin_tile(fz_context *ctx, fz_device *dev, const fz_rect *area, const fz_rect *view, float xstep, float ystep, const fz_matrix *ctm)
{
(void)fz_begin_tile_id(ctx, dev, area, view, xstep, ystep, ctm, 0);
}
int
fz_begin_tile_id(fz_context *ctx, fz_device *dev, const fz_rect *area, const fz_rect *view, float xstep, float ystep, const fz_matrix *ctm, int id)
{
int ret = 0;
if (dev->error_depth)
{
dev->error_depth++;
return 0;
}
if (xstep < 0)
xstep = -xstep;
if (ystep < 0)
ystep = -ystep;
fz_var(ret);
fz_try(ctx)
{
if (dev->begin_tile)
ret = dev->begin_tile(ctx, dev, area, view, xstep, ystep, ctm, id);
}
fz_catch(ctx)
{
dev->error_depth = 1;
strcpy(dev->errmess, fz_caught_message(ctx));
/* Error swallowed */
}
return ret;
}
void
fz_end_tile(fz_context *ctx, fz_device *dev)
{
if (dev->error_depth)
{
dev->error_depth--;
if (dev->error_depth == 0)
fz_throw(ctx, FZ_ERROR_GENERIC, "%s", dev->errmess);
return;
}
if (dev->end_tile)
dev->end_tile(ctx, dev);
}
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