[project @ 2005-12-10 14:31:32 by adrianl]

ArtWorks support

svn path=/import/netsurf/; revision=1891

1 files changed, 273 insertions, 0 deletions

diff --git a/riscos/artworks.c b/riscos/artworks.c
new file mode 100644
index 000000000..ac698f69e
--- /dev/null
+++ b/riscos/artworks.c
@@ -0,0 +1,273 @@
+/*
+ * This file is part of NetSurf, http://netsurf.sourceforge.net/
+ * Licensed under the GNU General Public License,
+ *                http://www.opensource.org/licenses/gpl-license
+ * Copyright 2005 Adrian Lees <adrianl@users.sourceforge.net>
+ */
+
+/** \file
+ * Content for image/artworks (RISC OS implementation).
+ *
+ * Uses the ArtworksRenderer module
+ */
+
+#include <assert.h>
+#include <limits.h>
+#include <stdlib.h>
+#include "swis.h"
+#include "oslib/os.h"
+#include "oslib/wimp.h"
+#include "netsurf/utils/config.h"
+#include "netsurf/content/content.h"
+#include "netsurf/riscos/artworks.h"
+#include "netsurf/riscos/gui.h"
+#include "netsurf/utils/utils.h"
+#include "netsurf/utils/messages.h"
+#include "netsurf/utils/log.h"
+
+#ifdef WITH_ARTWORKS
+
+#define AWRender_FileInitAddress 0x46080
+#define AWRender_RenderAddress   0x46081
+#define AWRender_DocBounds       0x46082
+#define AWRender_SendDefs        0x46083
+#define AWRender_ClaimVectors    0x46084
+#define AWRender_ReleaseVectors  0x46085
+#define AWRender_FindFirstFont   0x46086
+#define AWRender_FindNextFont    0x46087
+
+
+#define INITIAL_BLOCK_SIZE 0x1000
+
+
+struct awinfo_block {
+	int ditherx;
+	int dithery;
+	int clip_x0;
+	int clip_y0;
+	int clip_x1;
+	int clip_y1;
+	int print_lowx;
+	int print_lowy;
+	int print_handle;
+};
+
+
+/* Assembler routines for interfacing with the ArtworksRenderer module */
+
+os_error *awrender_init(char **doc,
+		size_t *doc_size,
+		void *routine,
+		void *workspace);
+
+os_error *awrender_render(const char *doc,
+		const struct awinfo_block *info,
+		const os_trfm *trans,
+		const int *vdu_vars,
+		void **rsz_block,
+		size_t *rsz_size,
+		int wysiwyg_setting,
+		int output_dest,
+		size_t doc_size,
+		void *routine,
+		void *workspace);
+
+
+
+/**
+ * Convert a CONTENT_ARTWORKS for display.
+ *
+ * No conversion is necessary. We merely read the ArtWorks
+ * bounding box bottom-left.
+ */
+
+bool artworks_convert(struct content *c, int width, int height)
+{
+	union content_msg_data msg_data;
+	void *init_workspace;
+	void *init_routine;
+	os_error *error;
+	int used;
+
+	/* check whether AWViewer has been seen and we can therefore
+		locate the ArtWorks rendering modules */
+	if (xos_read_var_val_size("Alias$LoadArtWorksModules", 0, os_VARTYPE_STRING,
+		&used, NULL, NULL) || used >= 0) {
+		LOG(("Alias$LoadArtWorksModules not defined"));
+		msg_data.error = messages_get("AWNotSeen");
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	/* load the modules, or do nothing if they're already loaded */
+	error = xos_cli("LoadArtWorksModules");
+	if (error) {
+		LOG(("xos_cli: 0x%x: %s",
+				error->errnum, error->errmess));
+		msg_data.error = error->errmess;
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	/* lookup the addresses of the init and render routines */
+	error = _swix(AWRender_FileInitAddress, _OUT(0) | _OUT(1),
+				&init_routine, &init_workspace);
+	if (error) {
+		LOG(("AWRender_FileInitAddress: 0x%x: %s",
+				error->errnum, error->errmess));
+		msg_data.error = error->errmess;
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	error = _swix(AWRender_RenderAddress, _OUT(0) | _OUT(1),
+				&c->data.artworks.render_routine,
+				&c->data.artworks.render_workspace);
+	if (error) {
+		LOG(("AWRender_RenderAddress: 0x%x: %s",
+				error->errnum, error->errmess));
+		msg_data.error = error->errmess;
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	/* initialise (convert file to new format if required) */
+	error = awrender_init(&c->source_data, &c->source_size,
+			init_routine, init_workspace);
+	if (error) {
+		LOG(("awrender_init: 0x%x : %s",
+			error->errnum, error->errmess));
+		msg_data.error = error->errmess;
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	error = _swix(AWRender_DocBounds, _IN(0) | _OUT(2) | _OUT(3) | _OUT(4) | _OUT(5),
+			c->source_data,
+			&c->data.artworks.x0,
+			&c->data.artworks.y0,
+			&c->data.artworks.x1,
+			&c->data.artworks.y1);
+	if (error) {
+		LOG(("AWRender_DocBounds: 0x%x: %s",
+			error->errnum, error->errmess));
+		msg_data.error = error->errmess;
+		content_broadcast(c, CONTENT_MSG_ERROR, msg_data);
+		return false;
+	}
+
+	LOG(("bounding box: %d,%d,%d,%d",
+			c->data.artworks.x0, c->data.artworks.y0,
+			c->data.artworks.x1, c->data.artworks.y1));
+
+	/* create the resizable workspace required by the
+		ArtWorksRenderer rendering routine */
+
+	c->data.artworks.size = INITIAL_BLOCK_SIZE;
+	c->data.artworks.block = malloc(INITIAL_BLOCK_SIZE);
+	if (!c->data.artworks.block) {
+		LOG(("failed to create block for ArtworksRenderer"));
+		warn_user("NoMemory", 0);
+		return false;
+	}
+
+	c->width = (c->data.artworks.x1 - c->data.artworks.x0) / 512;
+	c->height = (c->data.artworks.y1 - c->data.artworks.y0) / 512;
+
+	c->title = malloc(100);
+	if (c->title)
+		snprintf(c->title, 100, messages_get("ArtWorksTitle"), c->width,
+				c->height, c->source_size);
+	c->status = CONTENT_STATUS_DONE;
+	return true;
+}
+
+
+/**
+ * Destroy a CONTENT_ARTWORKS and free all resources it owns.
+ */
+
+void artworks_destroy(struct content *c)
+{
+	free(c->title);
+	free(c->data.artworks.block);
+}
+
+
+/**
+ * Redraw a CONTENT_ARTWORKS.
+ */
+
+bool artworks_redraw(struct content *c, int x, int y,
+		int width, int height,
+		int clip_x0, int clip_y0, int clip_x1, int clip_y1,
+		float scale, colour background_colour)
+{
+	const os_VDU_VAR_LIST(4) vars = {
+		{ os_MODEVAR_XEIG_FACTOR,
+		os_MODEVAR_YEIG_FACTOR,
+		os_MODEVAR_LOG2_BPP,
+		os_VDUVAR_END_LIST }
+	};
+	struct awinfo_block info;
+	os_error *error;
+	os_trfm matrix;
+	int vals[24];
+
+	/* Scaled image. Transform units (65536*OS units) */
+	matrix.entries[0][0] = width * 65536 / c->width;
+	matrix.entries[0][1] = 0;
+	matrix.entries[1][0] = 0;
+	matrix.entries[1][1] = height * 65536 / c->height;
+	/* Draw units. (x,y) = bottom left */
+	matrix.entries[2][0] = ro_plot_origin_x * 256 + x * 512 -
+			c->data.artworks.x0 * width / c->width;
+	matrix.entries[2][1] = ro_plot_origin_y * 256 - (y + height) * 512 -
+			c->data.artworks.y0 * height / c->height;
+
+	info.ditherx = ro_plot_origin_x;
+	info.dithery = ro_plot_origin_y;
+	info.clip_x0 = INT_MIN;
+	info.clip_y0 = INT_MIN;
+	info.clip_x1 = INT_MAX;
+	info.clip_y1 = INT_MAX;
+	info.print_lowx = 0;
+	info.print_lowy = 0;
+	info.print_handle = 0;
+
+	error = xos_read_vdu_variables((os_vdu_var_list*)&vars, vals);
+	if (error) {
+		LOG(("xos_read_vdu_variables: 0x%x: %s",
+			error->errnum, error->errmess));
+		return false;
+	}
+
+	error = xwimp_read_palette((os_palette*)&vals[3]);
+	if (error) {
+		LOG(("xwimp_read_palette: 0x%x: %s",
+			error->errnum, error->errmess));
+		return false;
+	}
+
+	error = awrender_render(c->source_data,
+			&info,
+			&matrix,
+			vals,
+			&c->data.artworks.block,
+			&c->data.artworks.size,
+			110,	/* fully anti-aliased */
+			0,
+			c->source_size,
+			c->data.artworks.render_routine,
+			c->data.artworks.render_workspace);
+
+	if (error) {
+		LOG(("awrender_render: 0x%x: %s",
+				error->errnum, error->errmess));
+		return false;
+	}
+
+	return true;
+}
+
+#endif