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-rw-r--r--content/content.c73
1 files changed, 71 insertions, 2 deletions
diff --git a/content/content.c b/content/content.c
index a6ca97817..cf0216453 100644
--- a/content/content.c
+++ b/content/content.c
@@ -33,7 +33,9 @@
#include "content/content_protected.h"
#include "content/hlcache.h"
#include "image/bitmap.h"
+#include "desktop/knockout.h"
#include "desktop/browser.h"
+#include "desktop/plotters.h"
#include "desktop/gui_internal.h"
#include "utils/nsoption.h"
@@ -551,8 +553,7 @@ void content__request_redraw(struct content *c,
/**
* Display content on screen with optional tiling.
*
- * Calls the redraw_tile function for the content, or emulates it with the
- * redraw function if it doesn't exist.
+ * Calls the redraw function for the content.
*/
bool content_redraw(hlcache_handle *h, struct content_redraw_data *data,
@@ -576,6 +577,74 @@ bool content_redraw(hlcache_handle *h, struct content_redraw_data *data,
}
+/* exported interface, documented in content/content.h */
+bool content_scaled_redraw(struct hlcache_handle *h,
+ int width, int height, const struct redraw_context *ctx)
+{
+ struct content *c = hlcache_handle_get_content(h);
+ struct redraw_context new_ctx = *ctx;
+ struct rect clip;
+ struct content_redraw_data data;
+ bool plot_ok = true;
+
+ assert(c != NULL);
+
+ /* ensure it is safe to attempt redraw */
+ if (c->locked) {
+ return true;
+ }
+
+ /* ensure we have a redrawable content */
+ if (c->handler->redraw == NULL) {
+ return true;
+ }
+
+ LOG(("Content %p %dx%d ctx:%p", c, width, height, ctx));
+
+ if (ctx->plot->option_knockout) {
+ knockout_plot_start(ctx, &new_ctx);
+ }
+
+ /* Set clip rectangle to required thumbnail size */
+ clip.x0 = 0;
+ clip.y0 = 0;
+ clip.x1 = width;
+ clip.y1 = height;
+
+ new_ctx.plot->clip(&clip);
+
+ /* Plot white background */
+ plot_ok &= new_ctx.plot->rectangle(clip.x0, clip.y0, clip.x1, clip.y1,
+ plot_style_fill_white);
+
+
+ /* Set up content redraw data */
+ data.x = 0;
+ data.y = 0;
+ data.width = width;
+ data.height = height;
+
+ data.background_colour = 0xFFFFFF;
+ data.repeat_x = false;
+ data.repeat_y = false;
+
+ /* Find the scale factor to use if the content has a width */
+ if (c->width) {
+ data.scale = (float)width / (float)c->width;
+ } else {
+ data.scale = 1.0;
+ }
+
+ /* Render the content */
+ plot_ok &= c->handler->redraw(c, &data, &clip, &new_ctx);
+
+ if (ctx->plot->option_knockout) {
+ knockout_plot_end();
+ }
+
+ return plot_ok;
+}
+
/**
* Register a user for callbacks.
*