guacamole-spice-protocol/src/protocols/rdp/rdp_glyph.c

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/*
* Copyright (C) 2013 Glyptodon LLC
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*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
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*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
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*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
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#include "config.h"
#include "client.h"
#include "guac_surface.h"
#include "rdp.h"
#include "rdp_color.h"
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#include "rdp_glyph.h"
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#include "rdp_settings.h"
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#include <freerdp/freerdp.h>
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#include <guacamole/client.h>
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#ifdef ENABLE_WINPR
#include <winpr/wtypes.h>
#else
#include "compat/winpr-wtypes.h"
#endif
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#include <pthread.h>
#include <stdint.h>
#include <stdlib.h>
/* Define cairo_format_stride_for_width() if missing */
#ifndef HAVE_CAIRO_FORMAT_STRIDE_FOR_WIDTH
#define cairo_format_stride_for_width(format, width) (width*4)
#endif
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void guac_rdp_glyph_new(rdpContext* context, rdpGlyph* glyph) {
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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;
}
}
}
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/* Store glyph surface */
((guac_rdp_glyph*) glyph)->surface = cairo_image_surface_create_for_data(
image_buffer, CAIRO_FORMAT_ARGB32, width, height, stride);
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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;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_common_surface* current_surface = rdp_client->current_surface;
uint32_t fgcolor = rdp_client->glyph_color;
/* Paint with glyph as mask */
guac_common_surface_paint(current_surface, x, y, ((guac_rdp_glyph*) glyph)->surface,
(fgcolor & 0xFF0000) >> 16,
(fgcolor & 0x00FF00) >> 8,
fgcolor & 0x0000FF);
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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(
((guac_rdp_glyph*) glyph)->surface);
/* Free surface */
cairo_surface_destroy(((guac_rdp_glyph*) glyph)->surface);
free(image_buffer);
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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;
guac_rdp_client* rdp_client =
(guac_rdp_client*) client->data;
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/* Fill background with color if specified */
if (width != 0 && height != 0) {
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/* Convert background color */
bgcolor = guac_rdp_convert_color(context, bgcolor);
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guac_common_surface_rect(rdp_client->current_surface, x, y, width, height,
(bgcolor & 0xFF0000) >> 16,
(bgcolor & 0x00FF00) >> 8,
bgcolor & 0x0000FF);
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}
/* Convert foreground color */
rdp_client->glyph_color = guac_rdp_convert_color(context, fgcolor);
}
void guac_rdp_glyph_enddraw(rdpContext* context,
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int x, int y, int width, int height, UINT32 fgcolor, UINT32 bgcolor) {
/* IGNORE */
}