| |
| /* ***** BEGIN LICENSE BLOCK ***** |
| * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
| * |
| * The contents of this file are subject to the Mozilla Public License Version |
| * 1.1 (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * http://www.mozilla.org/MPL/ |
| * |
| * Software distributed under the License is distributed on an "AS IS" basis, |
| * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License |
| * for the specific language governing rights and limitations under the |
| * License. |
| * |
| * The Original Code is libguac-client-rdp. |
| * |
| * The Initial Developer of the Original Code is |
| * Michael Jumper. |
| * Portions created by the Initial Developer are Copyright (C) 2011 |
| * the Initial Developer. All Rights Reserved. |
| * |
| * Contributor(s): |
| * Matt Hortman |
| * |
| * Alternatively, the contents of this file may be used under the terms of |
| * either the GNU General Public License Version 2 or later (the "GPL"), or |
| * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), |
| * in which case the provisions of the GPL or the LGPL are applicable instead |
| * of those above. If you wish to allow use of your version of this file only |
| * under the terms of either the GPL or the LGPL, and not to allow others to |
| * use your version of this file under the terms of the MPL, indicate your |
| * decision by deleting the provisions above and replace them with the notice |
| * and other provisions required by the GPL or the LGPL. If you do not delete |
| * the provisions above, a recipient may use your version of this file under |
| * the terms of any one of the MPL, the GPL or the LGPL. |
| * |
| * ***** END LICENSE BLOCK ***** */ |
| |
| #include <pthread.h> |
| #include <freerdp/freerdp.h> |
| |
| #include <guacamole/client.h> |
| #include <guacamole/error.h> |
| |
| #include "client.h" |
| #include "rdp_glyph.h" |
| |
| void guac_rdp_glyph_new(rdpContext* context, rdpGlyph* glyph) { |
| |
| int x, y, i; |
| int stride; |
| unsigned char* image_buffer; |
| unsigned char* image_buffer_row; |
| |
| unsigned char* data = glyph->aj; |
| int width = glyph->cx; |
| int height = glyph->cy; |
| |
| /* Init Cairo buffer */ |
| stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width); |
| image_buffer = malloc(height*stride); |
| image_buffer_row = image_buffer; |
| |
| /* Copy image data from image data to buffer */ |
| for (y = 0; y<height; y++) { |
| |
| unsigned int* image_buffer_current; |
| |
| /* Get current buffer row, advance to next */ |
| image_buffer_current = (unsigned int*) image_buffer_row; |
| image_buffer_row += stride; |
| |
| for (x = 0; x<width;) { |
| |
| /* Get byte from image data */ |
| unsigned int v = *(data++); |
| |
| /* Read bits, write pixels */ |
| for (i = 0; i<8 && x<width; i++, x++) { |
| |
| /* Output RGB */ |
| if (v & 0x80) |
| *(image_buffer_current++) = 0xFF000000; |
| else |
| *(image_buffer_current++) = 0x00000000; |
| |
| /* Next bit */ |
| v <<= 1; |
| |
| } |
| |
| } |
| } |
| |
| /* Store glyph surface */ |
| ((guac_rdp_glyph*) glyph)->surface = cairo_image_surface_create_for_data( |
| image_buffer, CAIRO_FORMAT_ARGB32, width, height, stride); |
| |
| } |
| |
| void guac_rdp_glyph_draw(rdpContext* context, rdpGlyph* glyph, int x, int y) { |
| |
| guac_client* client = ((rdp_freerdp_context*) context)->client; |
| rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data; |
| |
| /* Do not attempt to draw glyphs if glyph drawing is not begun */ |
| if (guac_client_data->glyph_cairo == NULL) |
| return; |
| |
| /* Use glyph as mask */ |
| cairo_mask_surface( |
| guac_client_data->glyph_cairo, |
| ((guac_rdp_glyph*) glyph)->surface, x, y); |
| |
| } |
| |
| void guac_rdp_glyph_free(rdpContext* context, rdpGlyph* glyph) { |
| |
| unsigned char* image_buffer = cairo_image_surface_get_data( |
| ((guac_rdp_glyph*) glyph)->surface); |
| |
| /* Free surface */ |
| cairo_surface_destroy(((guac_rdp_glyph*) glyph)->surface); |
| free(image_buffer); |
| |
| } |
| |
| void guac_rdp_glyph_begindraw(rdpContext* context, |
| int x, int y, int width, int height, uint32 fgcolor, uint32 bgcolor) { |
| |
| guac_client* client = ((rdp_freerdp_context*) context)->client; |
| rdp_guac_client_data* guac_client_data = |
| (rdp_guac_client_data*) client->data; |
| |
| /* Convert foreground color */ |
| fgcolor = freerdp_color_convert_var(fgcolor, |
| context->instance->settings->color_depth, 32, |
| ((rdp_freerdp_context*) context)->clrconv); |
| |
| /* Fill background with color if specified */ |
| if (width != 0 && height != 0) { |
| |
| /* Prepare for opaque glyphs */ |
| guac_client_data->glyph_surface = |
| guac_client_data->opaque_glyph_surface; |
| |
| /* Create cairo instance */ |
| guac_client_data->glyph_cairo = cairo_create( |
| guac_client_data->glyph_surface); |
| |
| /* Convert background color */ |
| bgcolor = freerdp_color_convert_var(bgcolor, |
| context->instance->settings->color_depth, 32, |
| ((rdp_freerdp_context*) context)->clrconv); |
| |
| /* Fill background */ |
| cairo_rectangle(guac_client_data->glyph_cairo, |
| x, y, width, height); |
| |
| cairo_set_source_rgb(guac_client_data->glyph_cairo, |
| ((bgcolor & 0xFF0000) >> 16) / 255.0, |
| ((bgcolor & 0x00FF00) >> 8 ) / 255.0, |
| ( bgcolor & 0x0000FF ) / 255.0); |
| |
| cairo_fill(guac_client_data->glyph_cairo); |
| |
| } |
| |
| /* Otherwise, prepare for transparent glyphs */ |
| else { |
| |
| /* Select transparent glyph surface */ |
| guac_client_data->glyph_surface = |
| guac_client_data->trans_glyph_surface; |
| |
| guac_client_data->glyph_cairo = cairo_create( |
| guac_client_data->glyph_surface); |
| |
| /* Clear surface */ |
| cairo_set_operator(guac_client_data->glyph_cairo, |
| CAIRO_OPERATOR_SOURCE); |
| |
| cairo_set_source_rgba(guac_client_data->glyph_cairo, 0, 0, 0, 0); |
| cairo_paint(guac_client_data->glyph_cairo); |
| |
| /* Restore operator */ |
| cairo_set_operator(guac_client_data->glyph_cairo, |
| CAIRO_OPERATOR_OVER); |
| |
| } |
| |
| /* Prepare for glyph drawing */ |
| cairo_set_source_rgb(guac_client_data->glyph_cairo, |
| ((fgcolor & 0xFF0000) >> 16) / 255.0, |
| ((fgcolor & 0x00FF00) >> 8 ) / 255.0, |
| ( fgcolor & 0x0000FF ) / 255.0); |
| |
| } |
| |
| void guac_rdp_glyph_enddraw(rdpContext* context, |
| int x, int y, int width, int height, uint32 fgcolor, uint32 bgcolor) { |
| |
| guac_client* client = ((rdp_freerdp_context*) context)->client; |
| rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data; |
| const guac_layer* current_layer = ((rdp_guac_client_data*) client->data)->current_surface; |
| |
| pthread_mutex_lock(&(guac_client_data->update_lock)); |
| |
| /* Use glyph surface to provide image data for glyph rectangle */ |
| cairo_surface_t* glyph_surface = guac_client_data->glyph_surface; |
| int stride = cairo_image_surface_get_stride(glyph_surface); |
| |
| /* Calculate bounds */ |
| int max_width = cairo_image_surface_get_width(glyph_surface) - x; |
| int max_height = cairo_image_surface_get_height(glyph_surface) - y; |
| |
| /* Ensure dimensions of glyph do not exceed bounds */ |
| if (width > max_width) width = max_width; |
| if (height > max_height) height = max_height; |
| |
| /* Ensure data is ready */ |
| cairo_surface_flush(glyph_surface); |
| |
| /* Create surface for subsection with text */ |
| cairo_surface_t* surface = cairo_image_surface_create_for_data( |
| cairo_image_surface_get_data(glyph_surface) + 4*x + y*stride, |
| cairo_image_surface_get_format(glyph_surface), |
| width, height, stride); |
| |
| /* Send surface with all glyphs to layer */ |
| guac_protocol_send_png(client->socket, |
| GUAC_COMP_OVER, current_layer, x, y, |
| surface); |
| |
| /* Destroy surface */ |
| cairo_surface_destroy(surface); |
| |
| /* Destroy cairo instance */ |
| cairo_destroy(guac_client_data->glyph_cairo); |
| |
| pthread_mutex_unlock(&(guac_client_data->update_lock)); |
| } |
| |
