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//
// Draw-to-image code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2018 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
#include "Fl_Xlib_Graphics_Driver.H"
#include <FL/Fl_Image_Surface.H>
#include "../../Fl_Screen_Driver.H"
class Fl_Xlib_Image_Surface_Driver : public Fl_Image_Surface_Driver {
virtual void end_current();
public:
Window pre_window;
Fl_Xlib_Image_Surface_Driver(int w, int h, int high_res, Fl_Offscreen off);
~Fl_Xlib_Image_Surface_Driver();
void set_current();
void translate(int x, int y);
void untranslate();
Fl_RGB_Image *image();
};
Fl_Image_Surface_Driver *Fl_Image_Surface_Driver::newImageSurfaceDriver(int w, int h, int high_res, Fl_Offscreen off)
{
return new Fl_Xlib_Image_Surface_Driver(w, h, high_res, off);
}
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) {
float d = 1;
if (!off) {
fl_open_display();
d = fl_graphics_driver->scale();
if (d != 1 && high_res) {
w = int(w*d);
h = int(h*d);
}
offscreen = XCreatePixmap(fl_display, RootWindow(fl_display, fl_screen), w, h, fl_visual->depth);
}
driver(new Fl_Xlib_Graphics_Driver());
if (d != 1 && high_res) ((Fl_Xlib_Graphics_Driver*)driver())->scale(d);
}
Fl_Xlib_Image_Surface_Driver::~Fl_Xlib_Image_Surface_Driver() {
if (offscreen && !external_offscreen) XFreePixmap(fl_display, offscreen);
delete driver();
}
void Fl_Xlib_Image_Surface_Driver::set_current() {
Fl_Surface_Device::set_current();
pre_window = fl_window;
fl_window = offscreen;
}
void Fl_Xlib_Image_Surface_Driver::translate(int x, int y) {
((Fl_Xlib_Graphics_Driver*)driver())->translate_all(x, y);
}
void Fl_Xlib_Image_Surface_Driver::untranslate() {
((Fl_Xlib_Graphics_Driver*)driver())->untranslate_all();
}
Fl_RGB_Image* Fl_Xlib_Image_Surface_Driver::image()
{
Fl_RGB_Image *image = Fl::screen_driver()->read_win_rectangle(0, 0, width, height, 0);
return image;
}
void Fl_Xlib_Image_Surface_Driver::end_current()
{
fl_window = pre_window;
Fl_Surface_Device::end_current();
}
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