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//
// "$Id$"
//
// Copy-to-clipboard 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:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include "../../config_lib.h"
#ifdef FL_CFG_GFX_GDI
#include <FL/Fl_Copy_Surface.H>
#include <FL/platform.H>
#include "Fl_GDI_Graphics_Driver.H"
#include "../WinAPI/Fl_WinAPI_Screen_Driver.H"
#include <FL/Fl_Image_Surface.H>
#include <windows.h>
class Fl_GDI_Copy_Surface_Driver : public Fl_Copy_Surface_Driver {
friend class Fl_Copy_Surface_Driver;
protected:
HDC oldgc;
HDC gc;
Fl_GDI_Copy_Surface_Driver(int w, int h);
~Fl_GDI_Copy_Surface_Driver();
void set_current();
void translate(int x, int y);
void untranslate();
};
Fl_Copy_Surface_Driver *Fl_Copy_Surface_Driver::newCopySurfaceDriver(int w, int h)
{
return new Fl_GDI_Copy_Surface_Driver(w, h);
}
Fl_GDI_Copy_Surface_Driver::Fl_GDI_Copy_Surface_Driver(int w, int h) : Fl_Copy_Surface_Driver(w, h) {
driver(new Fl_GDI_Graphics_Driver);
oldgc = (HDC)Fl_Surface_Device::surface()->driver()->gc();
// exact computation of factor from screen units to EnhMetaFile units (0.01 mm)
HDC hdc = GetDC(NULL);
int hmm = GetDeviceCaps(hdc, HORZSIZE);
int hdots = GetDeviceCaps(hdc, HORZRES);
int vmm = GetDeviceCaps(hdc, VERTSIZE);
int vdots = GetDeviceCaps(hdc, VERTRES);
ReleaseDC(NULL, hdc);
float factorw = (100.f * hmm) / hdots;
float factorh = (100.f * vmm) / vdots;
// Global display scaling factor: 1, 1.25, 1.5, 1.75, etc...
float scaling = Fl_Graphics_Driver::default_driver().scale();
((Fl_GDI_Graphics_Driver*)driver())->scale(scaling);
RECT rect; rect.left = 0; rect.top = 0; rect.right = (LONG)((w*scaling) * factorw); rect.bottom = (LONG)((h*scaling) * factorh);
gc = CreateEnhMetaFile (NULL, NULL, &rect, NULL);
if (gc != NULL) {
SetTextAlign(gc, TA_BASELINE|TA_LEFT);
SetBkMode(gc, TRANSPARENT);
}
}
Fl_GDI_Copy_Surface_Driver::~Fl_GDI_Copy_Surface_Driver() {
if (oldgc == (HDC)Fl_Surface_Device::surface()->driver()->gc()) oldgc = NULL;
HENHMETAFILE hmf = CloseEnhMetaFile (gc);
if ( hmf != NULL ) {
if ( OpenClipboard (NULL) ){
EmptyClipboard ();
// put first the vectorial form of the graphics in the clipboard
SetClipboardData (CF_ENHMETAFILE, hmf);
// then put a BITMAP version of the graphics in the clipboard
float scaling = driver()->scale();
int W = width * scaling, H = height * scaling;
RECT rect = {0, 0, W, H};
Fl_Image_Surface *surf = new Fl_Image_Surface(W, H);
Fl_Surface_Device::push_current(surf);
fl_color(FL_WHITE); // draw white background
fl_rectf(0, 0, W, H);
PlayEnhMetaFile((HDC)surf->driver()->gc(), hmf, &rect); // draw metafile to offscreen buffer
SetClipboardData(CF_BITMAP, surf->offscreen());
Fl_Surface_Device::pop_current();
delete surf;
CloseClipboard ();
}
DeleteEnhMetaFile(hmf);
}
DeleteDC(gc);
Fl_Surface_Device::surface()->driver()->gc(oldgc);
delete driver();
}
void Fl_GDI_Copy_Surface_Driver::set_current() {
driver()->gc(gc);
fl_window = (Window)1;
Fl_Surface_Device::set_current();
}
void Fl_GDI_Copy_Surface_Driver::translate(int x, int y) {
((Fl_GDI_Graphics_Driver*)driver())->translate_all(x, y);
}
void Fl_GDI_Copy_Surface_Driver::untranslate() {
((Fl_GDI_Graphics_Driver*)driver())->untranslate_all();
}
#endif // FL_CFG_GFX_GDI
//
// End of "$Id$".
//
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