32d4bc4099
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@9293 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
168 lines
5.0 KiB
C++
168 lines
5.0 KiB
C++
//
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// "$Id$"
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//
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// MacOS image drawing code for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2012 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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////////////////////////////////////////////////////////////////
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#include <config.h>
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#include <FL/Fl.H>
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#include <FL/fl_draw.H>
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#include <FL/Fl_Printer.H>
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#include <FL/x.H>
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#define MAXBUFFER 0x40000 // 256k
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static void dataReleaseCB(void *info, const void *data, size_t size)
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{
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delete[] (uchar *)data;
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}
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/*
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* draw an image based on the input parameters
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*
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* buf: image source data
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* X, Y: position (in buffer?!)
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* W, H: size of picture (in pixel?)
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* delta: distance from pixel to pixel in buf in bytes
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* linedelta: distance from line to line in buf in bytes
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* mono: if set, pixel is one byte - if zero, pixel is 3 byte
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* cb: callback to copy image data into (RGB?) buffer
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* buf: pointer to first byte in image source
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* x, y: position in buffer
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* w: width (in bytes?)
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* dst: destination buffer
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* userdata: ?
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*/
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static void innards(const uchar *buf, int X, int Y, int W, int H,
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int delta, int linedelta, int mono,
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Fl_Draw_Image_Cb cb, void* userdata)
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{
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if (!linedelta) linedelta = W*delta;
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const void *array = buf;
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uchar *tmpBuf = 0;
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if (cb || Fl_Surface_Device::surface() != Fl_Display_Device::display_device()) {
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tmpBuf = new uchar[ H*W*delta ];
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if (cb) {
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for (int i=0; i<H; i++) {
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cb(userdata, 0, i, W, tmpBuf+i*W*delta);
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}
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} else {
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uchar *p = tmpBuf;
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for (int i=0; i<H; i++) {
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memcpy(p, buf+i*linedelta, W*delta);
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p += W*delta;
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}
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}
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array = (void*)tmpBuf;
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linedelta = W*delta;
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}
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// create an image context
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CGColorSpaceRef lut = 0;
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if (delta<=2)
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lut = CGColorSpaceCreateDeviceGray();
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else
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lut = CGColorSpaceCreateDeviceRGB();
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// a release callback is necessary when the fl_gc is a print context because the image data
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// must be kept until the page is closed. Thus tmpBuf can't be deleted here. It's too early.
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CGDataProviderRef src = CGDataProviderCreateWithData( 0L, array, linedelta*H,
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tmpBuf ? dataReleaseCB : NULL
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);
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CGImageRef img = CGImageCreate( W, H, 8, 8*delta, linedelta,
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lut, delta&1?kCGImageAlphaNone:kCGImageAlphaNoneSkipLast,
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//lut, delta&1?kCGImageAlphaNone:kCGImageAlphaLast,
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src, 0L, false, kCGRenderingIntentDefault);
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// draw the image into the destination context
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if (img) {
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CGRect rect = { { X, Y }, { W, H } };
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Fl_X::q_begin_image(rect, 0, 0, W, H);
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CGContextDrawImage(fl_gc, rect, img);
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Fl_X::q_end_image();
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// release all allocated resources
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CGImageRelease(img);
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}
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CGColorSpaceRelease(lut);
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CGDataProviderRelease(src);
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if (img) return; // else fall through to slow mode
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// following the very save (and very slow) way to write the image into the give port
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CGContextSetShouldAntialias(fl_gc, false);
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if ( cb )
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{
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uchar *tmpBuf = new uchar[ W*4 ];
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for ( int i=0; i<H; i++ )
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{
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uchar *src = tmpBuf;
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cb( userdata, 0, i, W, tmpBuf );
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for ( int j=0; j<W; j++ )
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{
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if ( mono )
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{ fl_color( src[0], src[0], src[0] ); }
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else
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{ fl_color( src[0], src[1], src[2] ); }
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CGContextMoveToPoint(fl_gc, X+j, Y+i);
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CGContextAddLineToPoint(fl_gc, X+j, Y+i);
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CGContextStrokePath(fl_gc);
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src+=delta;
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}
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}
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delete[] tmpBuf;
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}
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else
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{
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for ( int i=0; i<H; i++ )
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{
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const uchar *src = buf+i*linedelta;
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for ( int j=0; j<W; j++ )
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{
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if ( mono )
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fl_color( src[0], src[0], src[0] );
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else
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fl_color( src[0], src[1], src[2] );
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CGContextMoveToPoint(fl_gc, X+j, Y+i);
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CGContextAddLineToPoint(fl_gc, X+j, Y+i);
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CGContextStrokePath(fl_gc);
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src += delta;
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}
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}
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}
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CGContextSetShouldAntialias(fl_gc, true);
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}
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void Fl_Quartz_Graphics_Driver::draw_image(const uchar* buf, int x, int y, int w, int h, int d, int l){
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innards(buf,x,y,w,h,d,l,(d<3&&d>-3),0,0);
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}
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void Fl_Quartz_Graphics_Driver::draw_image(Fl_Draw_Image_Cb cb, void* data,
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int x, int y, int w, int h,int d) {
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innards(0,x,y,w,h,d,0,(d<3&&d>-3),cb,data);
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}
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void Fl_Quartz_Graphics_Driver::draw_image_mono(const uchar* buf, int x, int y, int w, int h, int d, int l){
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innards(buf,x,y,w,h,d,l,1,0,0);
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}
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void Fl_Quartz_Graphics_Driver::draw_image_mono(Fl_Draw_Image_Cb cb, void* data,
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int x, int y, int w, int h,int d) {
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innards(0,x,y,w,h,d,0,1,cb,data);
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}
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void fl_rectf(int x, int y, int w, int h, uchar r, uchar g, uchar b) {
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fl_color(r,g,b);
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fl_rectf(x,y,w,h);
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}
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//
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// End of "$Id$".
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//
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