guacamole-spice-protocol/src/protocols/rdp/rdp_glyph.c
2019-09-22 14:48:26 -07:00

167 lines
4.8 KiB
C

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "config.h"
#include "client.h"
#include "common/surface.h"
#include "rdp.h"
#include "rdp_color.h"
#include "rdp_glyph.h"
#include "rdp_settings.h"
#include <freerdp/freerdp.h>
#include <guacamole/client.h>
#ifdef ENABLE_WINPR
#include <winpr/wtypes.h>
#else
#include "compat/winpr-wtypes.h"
#endif
#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
BOOL guac_rdp_glyph_new(rdpContext* context, const 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);
return TRUE;
}
BOOL guac_rdp_glyph_draw(rdpContext* context, const rdpGlyph* glyph,
UINT32 x, UINT32 y, UINT32 w, UINT32 h, UINT32 sx, UINT32 sy,
BOOL redundant);
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);
return TRUE;
}
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);
}
BOOL guac_rdp_glyph_begindraw(rdpContext* context,
UINT32 x, UINT32 y, UINT32 width, UINT32 height, UINT32 fgcolor, UINT32 bgcolor, BOOL redundant) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client =
(guac_rdp_client*) client->data;
/* Fill background with color if specified */
if (width != 0 && height != 0) {
/* Convert background color */
bgcolor = guac_rdp_convert_color(context, bgcolor);
guac_common_surface_set(rdp_client->current_surface,
x, y, width, height,
(bgcolor & 0xFF0000) >> 16,
(bgcolor & 0x00FF00) >> 8,
(bgcolor & 0x0000FF),
0xFF);
}
/* Convert foreground color */
rdp_client->glyph_color = guac_rdp_convert_color(context, fgcolor);
return TRUE;
}
BOOL guac_rdp_glyph_enddraw(rdpContext* context,
UINT32 x, UINT32 y, UINT32 width, UINT32 height, UINT32 fgcolor, UINT32 bgcolor) {
/* IGNORE */
return TRUE;
}