98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
//
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// Draw-to-image code for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2023 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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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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#include <FL/platform.H>
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#include "Fl_Xlib_Image_Surface_Driver.H"
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#include "../../Fl_Screen_Driver.H"
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#if FLTK_USE_CAIRO
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# include <cairo-xlib.h>
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# include "../Cairo/Fl_X11_Cairo_Graphics_Driver.H"
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#else
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# include "Fl_Xlib_Graphics_Driver.H"
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#endif // FLTK_USE_CAIRO
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Fl_Xlib_Image_Surface_Driver::Fl_Xlib_Image_Surface_Driver(int w, int h, int high_res, Fl_Offscreen off) : Fl_Image_Surface_Driver(w, h, high_res, off) {
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float d = 1;
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if (!off) {
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fl_open_display();
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d = Fl_Graphics_Driver::default_driver().scale();
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if (d != 1 && high_res) {
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w = int(w*d);
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h = int(h*d);
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}
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offscreen = (Fl_Offscreen)XCreatePixmap(fl_display, RootWindow(fl_display, fl_screen), w, h, fl_visual->depth);
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}
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#if FLTK_USE_CAIRO
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driver(new Fl_X11_Cairo_Graphics_Driver());
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cairo_surface_t *s = cairo_xlib_surface_create(fl_display, offscreen, fl_visual->visual, w, h);
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cairo_ = cairo_create(s);
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cairo_surface_destroy(s);
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cairo_save(cairo_);
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((Fl_X11_Cairo_Graphics_Driver*)driver())->set_cairo(cairo_);
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#else
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driver(new Fl_Xlib_Graphics_Driver());
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#endif
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if (d != 1 && high_res) driver()->scale(d);
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}
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Fl_Xlib_Image_Surface_Driver::~Fl_Xlib_Image_Surface_Driver() {
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#if FLTK_USE_CAIRO
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cairo_destroy(cairo_);
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#endif
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if (offscreen && !external_offscreen) XFreePixmap(fl_display, (Pixmap)offscreen);
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delete driver();
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}
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void Fl_Xlib_Image_Surface_Driver::set_current() {
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Fl_Surface_Device::set_current();
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pre_window = fl_window;
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fl_window = offscreen;
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#if FLTK_USE_CAIRO
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((Fl_X11_Cairo_Graphics_Driver*)driver())->set_cairo(cairo_);
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#endif
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}
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void Fl_Xlib_Image_Surface_Driver::translate(int x, int y) {
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#if FLTK_USE_CAIRO
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cairo_save(cairo_);
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cairo_translate(cairo_, x, y);
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#else
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((Fl_Xlib_Graphics_Driver*)driver())->translate_all(x, y);
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#endif
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}
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void Fl_Xlib_Image_Surface_Driver::untranslate() {
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#if FLTK_USE_CAIRO
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cairo_restore(cairo_);
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#else
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((Fl_Xlib_Graphics_Driver*)driver())->untranslate_all();
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#endif
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}
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Fl_RGB_Image* Fl_Xlib_Image_Surface_Driver::image()
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{
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Fl_RGB_Image *image = Fl::screen_driver()->read_win_rectangle(0, 0, width, height, 0);
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return image;
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}
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void Fl_Xlib_Image_Surface_Driver::end_current()
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{
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fl_window = pre_window;
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Fl_Surface_Device::end_current();
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}
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