243 lines
7.8 KiB
C
243 lines
7.8 KiB
C
/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "client.h"
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#include "rdp_glyph.h"
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#include <pthread.h>
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#include <freerdp/freerdp.h>
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#include <guacamole/client.h>
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#include <guacamole/error.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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/* 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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