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authorFran├žois Revel <mmu_man@netsurf-browser.org>2008-06-03 19:07:09 +0000
committerFran├žois Revel <mmu_man@netsurf-browser.org>2008-06-03 19:07:09 +0000
commit90a15a9753a4e882a4a0d7ce04fdae9ec5d29683 (patch)
treeb4c7f4651ce7f2c0e48b9eb4a6c91ffd56f5a1da /beos/beos_thumbnail.cpp
parent86e74c970bb29c0a31d0235cf6b9ab261fffbad5 (diff)
downloadnetsurf-90a15a9753a4e882a4a0d7ce04fdae9ec5d29683.tar.gz
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The BeOS-specific part of the BeOS (and Haiku) port, modeled mostly from the GTK version.
Some fixes are needed elsewhere but non-obvious ones I'll post on the mailing list for discussion. Currently it opens windows with a toolbar, url and status bar, a (yet empty) menu bar. Rendering seems to work including scrolling at scale 1 (other non-tested). framesets seems broken though. svn path=/trunk/netsurf/; revision=4253
Diffstat (limited to 'beos/beos_thumbnail.cpp')
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diff --git a/beos/beos_thumbnail.cpp b/beos/beos_thumbnail.cpp
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+/*
+ * Copyright 2006 Rob Kendrick <rjek@rjek.com>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ * Page thumbnail creation (implementation).
+ *
+ * Thumbnails are created by setting the current drawing contexts to a BView
+ * attached to the BBitmap we are passed, and plotting the page at a small
+ * scale.
+ */
+
+#include <assert.h>
+#include <Bitmap.h>
+#include <View.h>
+extern "C" {
+#include "content/content.h"
+#include "content/urldb.h"
+#include "desktop/plotters.h"
+#include "desktop/browser.h"
+#include "image/bitmap.h"
+#include "render/font.h"
+#include "utils/log.h"
+}
+#include "beos/beos_scaffolding.h"
+#include "beos/beos_plotters.h"
+#include "beos/beos_bitmap.h"
+
+/**
+ * Create a thumbnail of a page.
+ *
+ * \param content content structure to thumbnail
+ * \param bitmap the bitmap to draw to
+ * \param url the URL the thumnail belongs to, or NULL
+ */
+bool thumbnail_create(struct content *content, struct bitmap *bitmap,
+ const char *url)
+{
+#warning WRITEME
+#if 0 /* GTK */
+ GdkPixbuf *pixbuf;
+ gint width;
+ gint height;
+ gint depth;
+ GdkPixmap *pixmap;
+ GdkPixbuf *big;
+
+ assert(content);
+ assert(bitmap);
+
+ pixbuf = beos_bitmap_get_primary(bitmap);
+ width = gdk_pixbuf_get_width(pixbuf);
+ height = gdk_pixbuf_get_height(pixbuf);
+ depth = (gdk_screen_get_system_visual(gdk_screen_get_default()))->depth;
+
+ LOG(("Trying to create a thumbnail pixmap for a content of %dx%d@%d",
+ content->width, content->width, depth));
+
+ pixmap = gdk_pixmap_new(NULL, content->width, content->width, depth);
+
+ if (pixmap == NULL) {
+ /* the creation failed for some reason: most likely because
+ * we've been asked to create with with at least one dimention
+ * as zero. The RISC OS thumbnail generator returns false
+ * from here when it can't create a bitmap, so we assume it's
+ * safe to do so here too.
+ */
+ return false;
+ }
+
+ gdk_drawable_set_colormap(pixmap, gdk_colormap_get_system());
+
+ /* set the plotting functions up */
+ plot = nsbeos_plotters;
+
+ nsbeos_plot_set_scale(1.0);
+
+ /* set to plot to pixmap */
+ current_drawable = pixmap;
+ current_gc = gdk_gc_new(current_drawable);
+#ifdef CAIRO_VERSION
+ current_cr = gdk_cairo_create(current_drawable);
+#endif
+ plot.fill(0, 0, content->width, content->width, 0xffffffff);
+
+ /* render the content */
+ content_redraw(content, 0, 0, content->width, content->width,
+ 0, 0, content->width, content->width, 1.0, 0xFFFFFF);
+
+ /* resample the large plot down to the size of our thumbnail */
+ big = gdk_pixbuf_get_from_drawable(NULL, pixmap, NULL, 0, 0, 0, 0,
+ content->width, content->width);
+
+ gdk_pixbuf_scale(big, pixbuf, 0, 0, width, height, 0, 0,
+ (double)width / (double)content->width,
+ (double)height / (double)content->width,
+ GDK_INTERP_TILES);
+
+ /* As a debugging aid, try this to dump out a copy of the thumbnail as
+ * a PNG: gdk_pixbuf_save(pixbuf, "thumbnail.png", "png", NULL, NULL);
+ */
+
+ /* register the thumbnail with the URL */
+ if (url)
+ urldb_set_thumbnail(url, bitmap);
+
+ bitmap_modified(bitmap);
+
+ g_object_unref(current_gc);
+#ifdef CAIRO_VERSION
+ cairo_destroy(current_cr);
+#endif
+ g_object_unref(pixmap);
+ g_object_unref(big);
+
+ return true;
+#endif
+ return false;
+}