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- /* Copyright 2011-2014 Pierre Ossman for Cendio AB
- *
- * This is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this software; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- * USA.
- */
-
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
-
- #include <ApplicationServices/ApplicationServices.h>
-
- #include <FL/Fl_Window.H>
- #include <FL/x.H>
-
- #include <rfb/LogWriter.h>
- #include <rfb/Exception.h>
-
- #include "i18n.h"
- #include "OSXPixelBuffer.h"
-
- using namespace rfb;
-
- static rfb::LogWriter vlog("OSXPixelBuffer");
-
- OSXPixelBuffer::OSXPixelBuffer(int width, int height) :
- PlatformPixelBuffer(rfb::PixelFormat(32, 24, false, true,
- 255, 255, 255, 16, 8, 0),
- width, height, NULL, width),
- image(NULL)
- {
- CGColorSpaceRef lut;
- CGDataProviderRef provider;
-
- data = new rdr::U8[width * height * format.bpp/8];
- if (data == NULL)
- throw rfb::Exception(_("Not enough memory for framebuffer"));
-
- lut = CGDisplayCopyColorSpace(kCGDirectMainDisplay);
- if (!lut) {
- vlog.error(_("Could not get screen color space. Using slower fallback."));
- lut = CGColorSpaceCreateDeviceRGB();
- if (!lut)
- throw rfb::Exception("CGColorSpaceCreateDeviceRGB");
- }
-
- provider = CGDataProviderCreateWithData(NULL, data,
- width * height * 4, NULL);
- if (!provider)
- throw rfb::Exception("CGDataProviderCreateWithData");
-
- image = CGImageCreate(width, height, 8, 32, width * 4, lut,
- kCGImageAlphaNoneSkipFirst | kCGBitmapByteOrder32Little,
- provider, NULL, false, kCGRenderingIntentDefault);
- CGColorSpaceRelease(lut);
- CGDataProviderRelease(provider);
- if (!image)
- throw rfb::Exception("CGImageCreate");
- }
-
-
- OSXPixelBuffer::~OSXPixelBuffer()
- {
- CGImageRelease(image);
- delete [] data;
- }
-
-
- void OSXPixelBuffer::draw(int src_x, int src_y, int x, int y, int w, int h)
- {
- CGContextRef gc;
- CGRect rect;
-
- gc = fl_gc;
-
- CGContextSaveGState(gc);
-
- // macOS Coordinates are from bottom left, not top left
- src_y = height() - (src_y + h);
- y = Fl_Window::current()->h() - (y + h);
-
- // Reset the transformation matrix back to the default identity
- // matrix as otherwise we get a massive performance hit
- CGContextConcatCTM(gc, CGAffineTransformInvert(CGContextGetCTM(gc)));
-
- // We have to use clipping to partially display an image
- rect.origin.x = x;
- rect.origin.y = y;
- rect.size.width = w;
- rect.size.height = h;
-
- CGContextClipToRect(gc, rect);
-
- rect.origin.x = x - src_x;
- rect.origin.y = y - src_y;
- rect.size.width = width();
- rect.size.height = height();
-
- CGContextDrawImage(gc, rect, image);
-
- CGContextRestoreGState(gc);
- }
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