257 lines
8.3 KiB
C
257 lines
8.3 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is libguac-client-rdp.
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*
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* The Initial Developer of the Original Code is
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* Michael Jumper.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Matt Hortman
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include <pthread.h>
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#include <freerdp/freerdp.h>
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#ifdef ENABLE_WINPR
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#include <winpr/wtypes.h>
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#else
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#include "compat/winpr-wtypes.h"
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#endif
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#include <guacamole/client.h>
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#include <guacamole/error.h>
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#include "client.h"
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#include "rdp_glyph.h"
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/* Define cairo_format_stride_for_width() if missing */
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#ifndef HAVE_CAIRO_FORMAT_STRIDE_FOR_WIDTH
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#define cairo_format_stride_for_width(format, width) (width*4)
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#endif
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void guac_rdp_glyph_new(rdpContext* context, rdpGlyph* glyph) {
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int x, y, i;
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int stride;
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unsigned char* image_buffer;
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unsigned char* image_buffer_row;
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unsigned char* data = glyph->aj;
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int width = glyph->cx;
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int height = glyph->cy;
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/* Init Cairo buffer */
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stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
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image_buffer = malloc(height*stride);
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image_buffer_row = image_buffer;
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/* Copy image data from image data to buffer */
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for (y = 0; y<height; y++) {
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unsigned int* image_buffer_current;
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/* Get current buffer row, advance to next */
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image_buffer_current = (unsigned int*) image_buffer_row;
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image_buffer_row += stride;
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for (x = 0; x<width;) {
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/* Get byte from image data */
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unsigned int v = *(data++);
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/* Read bits, write pixels */
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for (i = 0; i<8 && x<width; i++, x++) {
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/* Output RGB */
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if (v & 0x80)
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*(image_buffer_current++) = 0xFF000000;
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else
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*(image_buffer_current++) = 0x00000000;
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/* Next bit */
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v <<= 1;
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}
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}
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}
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/* Store glyph surface */
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((guac_rdp_glyph*) glyph)->surface = cairo_image_surface_create_for_data(
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image_buffer, CAIRO_FORMAT_ARGB32, width, height, stride);
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}
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void guac_rdp_glyph_draw(rdpContext* context, rdpGlyph* glyph, int x, int y) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
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/* Do not attempt to draw glyphs if glyph drawing is not begun */
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if (guac_client_data->glyph_cairo == NULL)
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return;
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/* Use glyph as mask */
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cairo_mask_surface(
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guac_client_data->glyph_cairo,
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((guac_rdp_glyph*) glyph)->surface, x, y);
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}
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void guac_rdp_glyph_free(rdpContext* context, rdpGlyph* glyph) {
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unsigned char* image_buffer = cairo_image_surface_get_data(
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((guac_rdp_glyph*) glyph)->surface);
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/* Free surface */
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cairo_surface_destroy(((guac_rdp_glyph*) glyph)->surface);
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free(image_buffer);
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}
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void guac_rdp_glyph_begindraw(rdpContext* context,
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int x, int y, int width, int height, UINT32 fgcolor, UINT32 bgcolor) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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rdp_guac_client_data* guac_client_data =
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(rdp_guac_client_data*) client->data;
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/* Convert foreground color */
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fgcolor = freerdp_color_convert_var(fgcolor,
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guac_client_data->settings.color_depth, 32,
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((rdp_freerdp_context*) context)->clrconv);
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/* Fill background with color if specified */
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if (width != 0 && height != 0) {
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/* Prepare for opaque glyphs */
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guac_client_data->glyph_surface =
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guac_client_data->opaque_glyph_surface;
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/* Create cairo instance */
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guac_client_data->glyph_cairo = cairo_create(
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guac_client_data->glyph_surface);
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/* Convert background color */
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bgcolor = freerdp_color_convert_var(bgcolor,
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guac_client_data->settings.color_depth, 32,
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((rdp_freerdp_context*) context)->clrconv);
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/* Fill background */
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cairo_rectangle(guac_client_data->glyph_cairo,
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x, y, width, height);
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cairo_set_source_rgb(guac_client_data->glyph_cairo,
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((bgcolor & 0xFF0000) >> 16) / 255.0,
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((bgcolor & 0x00FF00) >> 8 ) / 255.0,
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( bgcolor & 0x0000FF ) / 255.0);
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cairo_fill(guac_client_data->glyph_cairo);
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}
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/* Otherwise, prepare for transparent glyphs */
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else {
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/* Select transparent glyph surface */
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guac_client_data->glyph_surface =
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guac_client_data->trans_glyph_surface;
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guac_client_data->glyph_cairo = cairo_create(
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guac_client_data->glyph_surface);
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/* Clear surface */
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cairo_set_operator(guac_client_data->glyph_cairo,
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CAIRO_OPERATOR_SOURCE);
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cairo_set_source_rgba(guac_client_data->glyph_cairo, 0, 0, 0, 0);
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cairo_paint(guac_client_data->glyph_cairo);
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/* Restore operator */
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cairo_set_operator(guac_client_data->glyph_cairo,
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CAIRO_OPERATOR_OVER);
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}
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/* Prepare for glyph drawing */
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cairo_set_source_rgb(guac_client_data->glyph_cairo,
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((fgcolor & 0xFF0000) >> 16) / 255.0,
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((fgcolor & 0x00FF00) >> 8 ) / 255.0,
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( fgcolor & 0x0000FF ) / 255.0);
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}
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void guac_rdp_glyph_enddraw(rdpContext* context,
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int x, int y, int width, int height, UINT32 fgcolor, UINT32 bgcolor) {
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guac_client* client = ((rdp_freerdp_context*) context)->client;
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rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
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const guac_layer* current_layer = ((rdp_guac_client_data*) client->data)->current_surface;
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/* Use glyph surface to provide image data for glyph rectangle */
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cairo_surface_t* glyph_surface = guac_client_data->glyph_surface;
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int stride = cairo_image_surface_get_stride(glyph_surface);
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/* Calculate bounds */
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int max_width = cairo_image_surface_get_width(glyph_surface) - x;
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int max_height = cairo_image_surface_get_height(glyph_surface) - y;
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/* Ensure dimensions of glyph do not exceed bounds */
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if (width > max_width) width = max_width;
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if (height > max_height) height = max_height;
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/* Clip operation to clipping region, if any */
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if (!guac_rdp_clip_rect(guac_client_data, &x, &y, &width, &height)) {
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/* Ensure data is ready */
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cairo_surface_flush(glyph_surface);
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/* Create surface for subsection with text */
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cairo_surface_t* surface = cairo_image_surface_create_for_data(
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cairo_image_surface_get_data(glyph_surface) + 4*x + y*stride,
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cairo_image_surface_get_format(glyph_surface),
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width, height, stride);
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/* Send surface with all glyphs to layer */
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guac_protocol_send_png(client->socket,
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GUAC_COMP_OVER, current_layer, x, y,
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surface);
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/* Destroy surface */
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cairo_surface_destroy(surface);
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}
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/* Destroy cairo instance */
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cairo_destroy(guac_client_data->glyph_cairo);
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}
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