Continue support for GUI rescaling under MacOS: fix fl_XXX_offscreen() functions and Fl_Image_Surface class
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12605 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
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@ -102,7 +102,7 @@ Fl_RGB_Image *Fl_Image_Surface::image() {
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Fl_Shared_Image* Fl_Image_Surface::highres_image()
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{
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if (!platform_surface) return NULL;
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Fl_Shared_Image *s_img = Fl_Shared_Image::get(platform_surface->image());
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Fl_Shared_Image *s_img = Fl_Shared_Image::get(image());
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int width, height;
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platform_surface->printable_rect(&width, &height);
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s_img->scale(width, height, 1, 1);
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@ -146,9 +146,7 @@ static int find_slot(void) { // return an available slot to memorize an Fl_Image
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*/
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Fl_Offscreen fl_create_offscreen(int w, int h) {
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int rank = find_slot();
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float d = Fl_Graphics_Driver::default_driver().scale();
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int high_res = d != 1;
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offscreen_api_surface[rank] = new Fl_Image_Surface(w, h, high_res);
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offscreen_api_surface[rank] = new Fl_Image_Surface(w, h, 1/*high_res*/);
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return offscreen_api_surface[rank]->offscreen();
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}
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@ -197,11 +195,9 @@ void fl_scale_offscreen(Fl_Offscreen &ctx) {
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}
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}
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if (i >= count_offscreens) return;
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Fl_RGB_Image *rgb = offscreen_api_surface[i]->image();
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Fl_Shared_Image *shared = offscreen_api_surface[i]->highres_image();
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offscreen_api_surface[i]->printable_rect(&w, &h);
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fl_delete_offscreen(ctx);
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Fl_Shared_Image *shared = Fl_Shared_Image::get(rgb);
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shared->scale(w, h, 0, 1);
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ctx = fl_create_offscreen(w, h);
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fl_begin_offscreen(ctx);
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shared->draw(0, 0);
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@ -26,7 +26,6 @@
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#include <FL/fl_draw.H>
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#include <FL/Fl.H>
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#include <FL/x.H>
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#include <ApplicationServices/ApplicationServices.h>
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Fl_Window_Driver *Fl_Window_Driver::newWindowDriver(Fl_Window *w)
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{
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@ -66,32 +65,20 @@ void Fl_Cocoa_Window_Driver::flush_overlay()
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if (!oWindow->shown()) return;
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pWindow->make_current(); // make sure fl_gc is non-zero
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Fl_Quartz_Graphics_Driver *g_driver = (Fl_Quartz_Graphics_Driver*)&Fl_Graphics_Driver::default_driver();
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float s = g_driver->scale() * (mapped_to_retina() ? 2 : 1);
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if (!other_xid) { // create offscreen accounting for GUI scaling and retina
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other_xid = (Fl_Offscreen)new Fl_Image_Surface(s * oWindow->w(), s * oWindow->h());
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if (!other_xid) {
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other_xid = fl_create_offscreen(oWindow->w(), oWindow->h());
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oWindow->clear_damage(FL_DAMAGE_ALL);
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// scale the offscreen buffer's graphics context
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Fl_Surface_Device::push_current((Fl_Image_Surface*)other_xid);
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CGContextRestoreGState(fl_gc);
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CGContextScaleCTM(fl_gc, s, s);
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CGContextSaveGState(fl_gc);
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Fl_Surface_Device::pop_current();
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}
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if (oWindow->damage() & ~FL_DAMAGE_EXPOSE) {
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Fl_X *myi = Fl_X::i(pWindow);
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fl_clip_region(myi->region); myi->region = 0;
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Fl_Surface_Device::push_current((Fl_Image_Surface*)other_xid);
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fl_begin_offscreen(other_xid);
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draw();
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Fl_Surface_Device::pop_current();
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fl_end_offscreen();
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}
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if (erase_overlay) fl_clip_region(0);
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if (other_xid) {
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CGContextSaveGState(fl_gc);
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CGContextScaleCTM(fl_gc, 1/s, 1/s);
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// copy offscreen to window using adequate scaling
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fl_copy_offscreen(0, 0, s * oWindow->w(),s * oWindow->h(), ((Fl_Image_Surface*)other_xid)->offscreen(), 0, 0);
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CGContextRestoreGState(fl_gc);
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fl_copy_offscreen(0, 0, oWindow->w(), oWindow->h(), other_xid, 0, 0);
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}
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if (overlay() == oWindow) oWindow->draw_overlay();
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}
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@ -99,7 +86,7 @@ void Fl_Cocoa_Window_Driver::flush_overlay()
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void Fl_Cocoa_Window_Driver::destroy_double_buffer()
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{
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if (pWindow->as_overlay_window()) delete (Fl_Image_Surface*)other_xid;
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if (pWindow->as_overlay_window()) fl_delete_offscreen(other_xid);
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other_xid = 0;
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}
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@ -20,6 +20,8 @@
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#include "Fl_Quartz_Graphics_Driver.H"
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#include "../Darwin/Fl_Darwin_System_Driver.H"
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#include <FL/x.H>
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#include <FL/fl_draw.H>
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#include <FL/Fl_Image_Surface.H>
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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Fl_Quartz_Graphics_Driver::pter_to_draw_member Fl_Quartz_Graphics_Driver::CoreText_or_ATSU_draw;
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@ -84,7 +86,8 @@ void Fl_Quartz_Graphics_Driver::global_gc()
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fl_gc = (CGContextRef)gc();
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}
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void Fl_Quartz_Graphics_Driver::copy_offscreen(int x,int y,int w,int h,Fl_Offscreen osrc,int srcx,int srcy) {
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void Fl_Quartz_Graphics_Driver::copy_offscreen(int x, int y, int w, int h, Fl_Offscreen osrc, int srcx, int srcy) {
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// draw portion srcx,srcy,w,h of osrc to position x,y (top-left) of the graphics driver's surface
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CGContextRef src = (CGContextRef)osrc;
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void *data = CGBitmapContextGetData(src);
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int sw = CGBitmapContextGetWidth(src);
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@ -92,16 +95,26 @@ void Fl_Quartz_Graphics_Driver::copy_offscreen(int x,int y,int w,int h,Fl_Offscr
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CGImageAlphaInfo alpha = CGBitmapContextGetAlphaInfo(src);
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CGColorSpaceRef lut = CGColorSpaceCreateDeviceRGB();
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// when output goes to a Quartz printercontext, release of the bitmap must be
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// delayed after the end of the print page
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// delayed after the end of the printed page
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CFRetain(src);
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CGDataProviderRef src_bytes = CGDataProviderCreateWithData( src, data, sw*sh*4, bmProviderRelease);
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CGImageRef img = CGImageCreate( sw, sh, 8, 4*8, 4*sw, lut, alpha,
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src_bytes, 0L, false, kCGRenderingIntentDefault);
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draw_CGImage(img, x, y, w, h, srcx, srcy, sw, sh);
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CGImageRelease(img);
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CGColorSpaceRelease(lut);
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CGDataProviderRelease(src_bytes);
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CGColorSpaceRelease(lut);
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float s = scale_;
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Fl_Surface_Device *current = Fl_Surface_Device::surface();
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// test whether osrc was created by fl_create_offscreen()
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fl_begin_offscreen(osrc); // does nothing if osrc was not created by fl_create_offscreen()
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if (current != Fl_Surface_Device::surface()) { // osrc was created by fl_create_offscreen()
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Fl_Image_Surface *imgs = (Fl_Image_Surface*)Fl_Surface_Device::surface();
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int pw, ph;
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imgs->printable_rect(&pw, &ph);
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s = sw / float(pw);
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fl_end_offscreen();
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}
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draw_CGImage(img, x, y, w, h, srcx, srcy, sw/s, sh/s);
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CGImageRelease(img);
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}
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// so a CGRect matches exactly what is denoted x,y,w,h for clipping purposes
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@ -23,6 +23,7 @@
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#include <FL/fl_draw.H>
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#include <FL/Fl_Image_Surface.H>
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#include "Fl_Quartz_Graphics_Driver.H"
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#include "../Cocoa/Fl_Cocoa_Window_Driver.H"
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#include <ApplicationServices/ApplicationServices.h>
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class Fl_Quartz_Image_Surface_Driver : public Fl_Image_Surface_Driver {
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@ -46,15 +47,21 @@ Fl_Image_Surface_Driver *Fl_Image_Surface_Driver::newImageSurfaceDriver(int w, i
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Fl_Quartz_Image_Surface_Driver::Fl_Quartz_Image_Surface_Driver(int w, int h, int high_res, Fl_Offscreen off) : Fl_Image_Surface_Driver(w, h, high_res, 0) {
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int W = high_res ? 2*w : w;
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int H = high_res ? 2*h : h;
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int W = w, H = h;
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float s = 1;
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if (high_res) {
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s = Fl_Graphics_Driver::default_driver().scale();
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Fl_Window *cw = Fl_Window::current();
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if (cw && ((Fl_Cocoa_Window_Driver*)cw->driver())->mapped_to_retina()) s *= 2;
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W *= s; H *= s;
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}
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CGColorSpaceRef lut = CGColorSpaceCreateDeviceRGB();
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offscreen = off ? off : CGBitmapContextCreate(calloc(W*H,4), W, H, 8, W*4, lut, kCGImageAlphaPremultipliedLast);
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CGColorSpaceRelease(lut);
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driver(new Fl_Quartz_Graphics_Driver);
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CGContextTranslateCTM(offscreen, 0.5, -0.5); // as when drawing to a window
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if (high_res) {
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CGContextScaleCTM(offscreen, 2, 2);
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CGContextScaleCTM(offscreen, s, s);
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}
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CGContextSetShouldAntialias(offscreen, false);
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CGContextTranslateCTM(offscreen, 0, height);
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