Implemented thumbnails, though we don't use them yet.
svn path=/trunk/netsurf/; revision=5465
This commit is contained in:
François Revel
parent
0a580aa82d
commit
dcb33e9835
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@ -42,6 +42,10 @@ extern "C" {
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#include "beos/beos_plotters.h"
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#include "beos/beos_bitmap.h"
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// Zeta PRIVATE: in libzeta for now.
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extern status_t ScaleBitmap(const BBitmap& inBitmap, BBitmap& outBitmap);
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/**
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* Create a thumbnail of a page.
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*
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@ -52,69 +56,98 @@ extern "C" {
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bool thumbnail_create(struct content *content, struct bitmap *bitmap,
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const char *url)
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{
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#warning WRITEME
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#if 0 /* GTK */
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GdkPixbuf *pixbuf;
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gint width;
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gint height;
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gint depth;
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GdkPixmap *pixmap;
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GdkPixbuf *big;
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BBitmap *thumbnail;
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BBitmap *small;
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BBitmap *big;
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BView *oldView;
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BView *view;
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BView *thumbView;
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float width;
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float height;
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int depth;
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assert(content);
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assert(bitmap);
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pixbuf = beos_bitmap_get_primary(bitmap);
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width = gdk_pixbuf_get_width(pixbuf);
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height = gdk_pixbuf_get_height(pixbuf);
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depth = (gdk_screen_get_system_visual(gdk_screen_get_default()))->depth;
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thumbnail = nsbeos_bitmap_get_primary(bitmap);
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width = thumbnail->Bounds().Width();
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height = thumbnail->Bounds().Height();
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depth = 32;
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//depth = (gdk_screen_get_system_visual(gdk_screen_get_default()))->depth;
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LOG(("Trying to create a thumbnail pixmap for a content of %dx%d@%d",
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LOG(("Trying to create a thumbnail bitmap %dx%d for a content of %dx%d@%d",
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width, height,
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content->width, content->width, depth));
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pixmap = gdk_pixmap_new(NULL, content->width, content->width, depth);
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if (pixmap == NULL) {
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/* the creation failed for some reason: most likely because
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* we've been asked to create with with at least one dimention
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* as zero. The RISC OS thumbnail generator returns false
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* from here when it can't create a bitmap, so we assume it's
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* safe to do so here too.
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*/
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BRect contentRect(0, 0, content->width - 1, content->width - 1);
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big = new BBitmap(contentRect,
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B_BITMAP_ACCEPTS_VIEWS, B_RGB32);
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if (big->InitCheck() < B_OK) {
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delete big;
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return false;
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}
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gdk_drawable_set_colormap(pixmap, gdk_colormap_get_system());
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small = new BBitmap(thumbnail->Bounds(),
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B_BITMAP_ACCEPTS_VIEWS, B_RGB32);
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if (small->InitCheck() < B_OK) {
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delete small;
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delete big;
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return false;
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}
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//XXX: _lock ?
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// backup the current gc
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oldView = nsbeos_current_gc();
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view = new BView(contentRect, "thumbnailer",
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B_FOLLOW_NONE, B_WILL_DRAW);
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big->AddChild(view);
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thumbView = new BView(small->Bounds(), "thumbnail",
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B_FOLLOW_NONE, B_WILL_DRAW);
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small->AddChild(thumbView);
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view->LockLooper();
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/* impose our view on the content... */
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nsbeos_current_gc_set(view);
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/* set the plotting functions up */
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plot = nsbeos_plotters;
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nsbeos_plot_set_scale(1.0);
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/* set to plot to pixmap */
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current_drawable = pixmap;
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current_gc = gdk_gc_new(current_drawable);
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#ifdef CAIRO_VERSION
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current_cr = gdk_cairo_create(current_drawable);
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#endif
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plot.fill(0, 0, content->width, content->width, 0xffffffff);
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/* render the content */
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content_redraw(content, 0, 0, content->width, content->width,
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0, 0, content->width, content->width, 1.0, 0xFFFFFF);
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view->Sync();
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view->UnlockLooper();
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/* resample the large plot down to the size of our thumbnail */
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big = gdk_pixbuf_get_from_drawable(NULL, pixmap, NULL, 0, 0, 0, 0,
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content->width, content->width);
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// restore the current gc
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nsbeos_current_gc_set(oldView);
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gdk_pixbuf_scale(big, pixbuf, 0, 0, width, height, 0, 0,
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(double)width / (double)content->width,
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(double)height / (double)content->width,
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GDK_INTERP_TILES);
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/* As a debugging aid, try this to dump out a copy of the thumbnail as
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* a PNG: gdk_pixbuf_save(pixbuf, "thumbnail.png", "png", NULL, NULL);
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*/
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// now scale it down
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//XXX: use Zeta's bilinear scaler ?
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//#ifdef B_ZETA_VERSION
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// err = ScaleBitmap(*shot, *scaledBmp);
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//#else
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thumbView->LockLooper();
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thumbView->DrawBitmap(big, big->Bounds(), small->Bounds());
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thumbView->Sync();
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thumbView->UnlockLooper();
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small->LockBits();
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thumbnail->LockBits();
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// copy it to the bitmap
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memcpy(thumbnail->Bits(), small->Bits(), thumbnail->BitsLength());
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thumbnail->UnlockBits();
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small->UnlockBits();
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/* register the thumbnail with the URL */
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if (url)
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@ -122,14 +155,13 @@ bool thumbnail_create(struct content *content, struct bitmap *bitmap,
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bitmap_modified(bitmap);
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g_object_unref(current_gc);
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#ifdef CAIRO_VERSION
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cairo_destroy(current_cr);
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#endif
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g_object_unref(pixmap);
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g_object_unref(big);
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// cleanup
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small->RemoveChild(thumbView);
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delete thumbView;
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delete small;
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big->RemoveChild(view);
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delete view;
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delete big;
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return true;
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#endif
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return false;
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}
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