1 files changed, 116 insertions, 0 deletions
diff --git a/frontends/riscos/bitmap.h b/frontends/riscos/bitmap.h
new file mode 100644
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+++ b/frontends/riscos/bitmap.h
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+/*
+ * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
+ *
+ * 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/>.
+ */
+
+#ifndef _NETSURF_RISCOS_BITMAP_H_
+#define _NETSURF_RISCOS_BITMAP_H_
+
+struct osspriteop_area;
+struct osspriteop_header;
+struct hlcache_handle;
+struct bitmap;
+
+/** bitmap operations table */
+struct gui_bitmap_table *riscos_bitmap_table;
+
+/** save with full alpha channel (if not opaque) */
+#define BITMAP_SAVE_FULL_ALPHA	(1 << 0)
+
+/**
+ * RISC OS wimp toolkit bitmap.
+ */
+struct bitmap {
+	int width; /**< width of bitmap */
+	int height; /**< height of bitmap */
+
+	unsigned int state; /**< The bitmap attributes (opaque/dirty etc.) */
+
+	struct osspriteop_area *sprite_area; /**< Uncompressed data, or NULL */
+};
+
+/**
+ * Convert bitmap to 8bpp sprite.
+ *
+ * \param bitmap the bitmap to convert.
+ * \return The converted sprite.
+ */
+struct osspriteop_area *riscos_bitmap_convert_8bpp(struct bitmap *bitmap);
+
+/**
+ * Render content into bitmap.
+ *
+ * \param bitmap the bitmap to draw to
+ * \param content content structure to render
+ * \return true on success and bitmap updated else false
+ */
+nserror riscos_bitmap_render(struct bitmap *bitmap, struct hlcache_handle *content);
+
+/**
+ * Overlay a sprite onto the given bitmap
+ *
+ * \param bitmap  bitmap object
+ * \param s       8bpp sprite to be overlayed onto bitmap
+ */
+void riscos_bitmap_overlay_sprite(struct bitmap *bitmap, const struct osspriteop_header *s);
+
+/**
+ * Create a bitmap.
+ *
+ * \param  width   width of image in pixels
+ * \param  height  width of image in pixels
+ * \param  state the state to create the bitmap in.
+ * \return an opaque struct bitmap, or NULL on memory exhaustion
+ */
+void *riscos_bitmap_create(int width, int height, unsigned int state);
+
+/**
+ * Free a bitmap.
+ *
+ * \param  vbitmap  a bitmap, as returned by bitmap_create()
+ */
+void riscos_bitmap_destroy(void *vbitmap);
+
+/**
+ * Return a pointer to the pixel data in a bitmap.
+ *
+ * The pixel data is packed as BITMAP_FORMAT, possibly with padding at
+ * the end of rows. The width of a row in bytes is given by
+ * riscos_bitmap_get_rowstride().
+ *
+ * \param vbitmap A bitmap as returned by riscos_bitmap_create()
+ * \return pointer to the pixel buffer
+ */
+unsigned char *riscos_bitmap_get_buffer(void *vbitmap);
+
+/**
+ * Gets whether a bitmap should be plotted opaque
+ *
+ * \param vbitmap A bitmap, as returned by riscos_bitmap_create()
+ */
+bool riscos_bitmap_get_opaque(void *vbitmap);
+
+/**
+ * Save a bitmap in the platform's native format.
+ *
+ * \param  vbitmap  a bitmap, as returned by bitmap_create()
+ * \param  path	   pathname for file
+ * \param  flags   modify the behaviour of the save
+ * \return true on success, false on error and error reported
+ */
+bool riscos_bitmap_save(void *vbitmap, const char *path, unsigned flags);
+
+#endif