ref: 9eaba52cafcac7c2f3bfc72d7be1f15893196be1
dir: /DoConfig/fltk/src/Fl_Copy_Surface.cxx/
//
// "$Id$"
//
// Copy-to-clipboard code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2016 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 <FL/Fl_Copy_Surface.H>
#include <FL/Fl.H>
#if defined(__APPLE__)
#include <ApplicationServices/ApplicationServices.h>
Fl_Quartz_Surface_::Fl_Quartz_Surface_(int w, int h) : Fl_System_Printer(), width(w), height(h) {
}
int Fl_Quartz_Surface_::printable_rect(int *w, int *h) {
*w = width;
*h = height;
return 0;
}
const char *Fl_Quartz_Surface_::class_id = "Fl_Quartz_Surface_";
#elif defined(WIN32)
Fl_GDI_Surface_::Fl_GDI_Surface_() : Fl_Paged_Device() {
driver(new Fl_GDI_Graphics_Driver);
depth = 0;
}
Fl_GDI_Surface_::~Fl_GDI_Surface_() {
delete driver();
}
void Fl_GDI_Surface_::translate(int x, int y) {
GetWindowOrgEx(fl_gc, origins+depth);
SetWindowOrgEx(fl_gc, origins[depth].x - x, origins[depth].y - y, NULL);
if (depth < sizeof(origins)/sizeof(POINT)) depth++;
else Fl::warning("Fl_GDI_Surface_: translate stack overflow!");
}
void Fl_GDI_Surface_::untranslate() {
if (depth > 0) depth--;
SetWindowOrgEx(fl_gc, origins[depth].x, origins[depth].y, NULL);
}
const char *Fl_GDI_Surface_::class_id = "Fl_GDI_Surface_";
#endif
const char *Fl_Copy_Surface::class_id = "Fl_Copy_Surface";
/** Constructor.
\param w and \param h are the width and height of the clipboard surface
in pixels where drawing will occur.
*/
Fl_Copy_Surface::Fl_Copy_Surface(int w, int h) : Fl_Surface_Device(NULL)
{
width = w;
height = h;
#ifdef __APPLE__
helper = new Fl_Quartz_Surface_(width, height);
driver(helper->driver());
prepare_copy_pdf_and_tiff(w, h);
oldgc = fl_gc;
#elif defined(WIN32)
helper = new Fl_GDI_Surface_();
driver(helper->driver());
oldgc = fl_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);
int dhr = GetDeviceCaps(hdc, DESKTOPHORZRES); // true number of pixels on display
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 = dhr/float(hdots);
RECT rect; rect.left = 0; rect.top = 0; rect.right = (LONG)(w * factorw / scaling); rect.bottom = (LONG)(h * factorh / scaling);
gc = CreateEnhMetaFile (NULL, NULL, &rect, NULL);
if (gc != NULL) {
SetTextAlign(gc, TA_BASELINE|TA_LEFT);
SetBkMode(gc, TRANSPARENT);
}
#else // Xlib
helper = new Fl_Xlib_Surface_();
driver(helper->driver());
Fl::first_window()->make_current();
oldwindow = fl_xid(Fl::first_window());
xid = fl_create_offscreen(w,h);
Fl_Surface_Device *present_surface = Fl_Surface_Device::surface();
set_current();
fl_color(FL_WHITE);
fl_rectf(0, 0, w, h);
present_surface->set_current();
#endif
}
/** Destructor.
*/
Fl_Copy_Surface::~Fl_Copy_Surface()
{
#ifdef __APPLE__
complete_copy_pdf_and_tiff();
fl_gc = oldgc;
delete (Fl_Quartz_Surface_*)helper;
#elif defined(WIN32)
if(oldgc == fl_gc) oldgc = NULL;
HENHMETAFILE hmf = CloseEnhMetaFile (gc);
if ( hmf != NULL ) {
if ( OpenClipboard (NULL) ){
EmptyClipboard ();
SetClipboardData (CF_ENHMETAFILE, hmf);
CloseClipboard ();
}
DeleteEnhMetaFile(hmf);
}
DeleteDC(gc);
fl_gc = oldgc;
delete (Fl_GDI_Surface_*)helper;
#else // Xlib
fl_pop_clip();
unsigned char *data = fl_read_image(NULL,0,0,width,height,0);
fl_window = oldwindow;
_ss->set_current();
Fl::copy_image(data,width,height,1);
delete[] data;
fl_delete_offscreen(xid);
delete (Fl_Xlib_Surface_*)helper;
#endif
}
/** Copies a widget in the clipboard
\param widget any FLTK widget (e.g., standard, custom, window, GL view) to copy
\param delta_x and \param delta_y give
the position in the clipboard of the top-left corner of the widget
*/
void Fl_Copy_Surface::draw(Fl_Widget* widget, int delta_x, int delta_y)
{
helper->print_widget(widget, delta_x, delta_y);
}
void Fl_Copy_Surface::set_current()
{
#if defined(__APPLE__) || defined(WIN32)
fl_gc = gc;
fl_window = (Window)1;
Fl_Surface_Device::set_current();
#else
fl_window=xid;
_ss = Fl_Surface_Device::surface();
Fl_Surface_Device::set_current();
fl_push_no_clip();
#endif
}
#if defined(__APPLE__)
size_t Fl_Copy_Surface::MyPutBytes(void* info, const void* buffer, size_t count)
{
CFDataAppendBytes ((CFMutableDataRef) info, (const UInt8 *)buffer, count);
return count;
}
void Fl_Copy_Surface::init_PDF_context(int w, int h)
{
CGRect bounds = CGRectMake(0, 0, w, h );
pdfdata = CFDataCreateMutable(NULL, 0);
CGDataConsumerRef myconsumer;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1040
if (&CGDataConsumerCreateWithCFData != NULL) {
myconsumer = CGDataConsumerCreateWithCFData(pdfdata); // 10.4
}
else
#endif
{
static CGDataConsumerCallbacks callbacks = { Fl_Copy_Surface::MyPutBytes, NULL };
myconsumer = CGDataConsumerCreate ((void*) pdfdata, &callbacks);
}
gc = CGPDFContextCreate (myconsumer, &bounds, NULL);
CGDataConsumerRelease (myconsumer);
}
void Fl_Copy_Surface::prepare_copy_pdf_and_tiff(int w, int h)
{
init_PDF_context(w, h);
if (gc == NULL) return;
CGRect bounds = CGRectMake(0, 0, w, h );
CGContextBeginPage (gc, &bounds);
CGContextTranslateCTM(gc, 0, h);
CGContextScaleCTM(gc, 1.0f, -1.0f);
CGContextSaveGState(gc);
}
void Fl_Copy_Surface::draw_decorated_window(Fl_Window* win, int delta_x, int delta_y)
{
int bt = win->decorated_h() - win->h();
draw(win, delta_x, bt + delta_y ); // draw the window content
if (win->border()) {
// draw the window title bar
CGContextSaveGState(gc);
CGContextTranslateCTM(gc, delta_x, bt + delta_y);
CGContextScaleCTM(gc, 1, -1);
Fl_X::clip_to_rounded_corners(gc, win->w(), bt);
void *layer = Fl_X::get_titlebar_layer(win);
if (layer) {
CGColorSpaceRef cspace = CGColorSpaceCreateDeviceRGB();
if (fl_mac_os_version < 101300) {
// for unknown reason, rendering the layer to the Fl_Copy_Surface pdf graphics context does not work;
// we use an auxiliary bitmap context
CGContextRef auxgc = CGBitmapContextCreate(NULL, win->w(), bt, 8, 0, cspace, kCGImageAlphaPremultipliedLast);
CGColorSpaceRelease(cspace);
CGContextTranslateCTM(auxgc, 0, bt);
CGContextScaleCTM(auxgc, 1, -1);
Fl_X::draw_layer_to_context(layer, auxgc, win->w(), bt);
Fl_RGB_Image *image = new Fl_RGB_Image((const uchar*)CGBitmapContextGetData(auxgc), win->w(), bt, 4,
CGBitmapContextGetBytesPerRow(auxgc)); // 10.2
image->draw(0, 0);
delete image;
CGContextRelease(auxgc);
} else {
Fl_X::draw_layer_to_context(layer, gc, win->w(), bt);
}
} else {
CGImageRef img = Fl_X::CGImage_from_window_rect(win, 0, -bt, win->w(), bt);
CGContextDrawImage(gc, CGRectMake(0, 0, win->w(), bt), img);
CGImageRelease(img);
}
CGContextRestoreGState(gc);
}
}
#else
/** Copies a window and its borders and title bar to the clipboard.
\param win an FLTK window to copy
\param delta_x and \param delta_y give
the position in the clipboard of the top-left corner of the window's title bar
*/
void Fl_Copy_Surface::draw_decorated_window(Fl_Window* win, int delta_x, int delta_y)
{
helper->draw_decorated_window(win, delta_x, delta_y, this);
}
#endif // __APPLE__
#if !(defined(__APPLE__) || defined(WIN32) || defined(FL_DOXYGEN))
/* graphics driver that translates all graphics coordinates before calling Xlib */
class Fl_translated_Xlib_Graphics_Driver_ : public Fl_Xlib_Graphics_Driver {
int offset_x, offset_y; // translation between user and graphical coordinates: graphical = user + offset
unsigned depth; // depth of translation stack
int stack_x[20], stack_y[20]; // translation stack allowing cumulative translations
public:
static const char *class_id;
const char *class_name() {return class_id;};
Fl_translated_Xlib_Graphics_Driver_() {
offset_x = 0; offset_y = 0;
depth = 0;
}
virtual ~Fl_translated_Xlib_Graphics_Driver_() {};
void translate_all(int dx, int dy) { // reversibly adds dx,dy to the offset between user and graphical coordinates
stack_x[depth] = offset_x;
stack_y[depth] = offset_y;
offset_x = stack_x[depth] + dx;
offset_y = stack_y[depth] + dy;
push_matrix();
translate(dx, dy);
if (depth < sizeof(stack_x)/sizeof(int)) depth++;
else Fl::warning("%s: translate stack overflow!", class_id);
}
void untranslate_all() { // undoes previous translate_all()
if (depth > 0) depth--;
offset_x = stack_x[depth];
offset_y = stack_y[depth];
pop_matrix();
}
void rect(int x, int y, int w, int h) { Fl_Xlib_Graphics_Driver::rect(x+offset_x, y+offset_y, w, h); }
void rectf(int x, int y, int w, int h) { Fl_Xlib_Graphics_Driver::rectf(x+offset_x, y+offset_y, w, h); }
void xyline(int x, int y, int x1) { Fl_Xlib_Graphics_Driver::xyline(x+offset_x, y+offset_y, x1+offset_x); }
void xyline(int x, int y, int x1, int y2) { Fl_Xlib_Graphics_Driver::xyline(x+offset_x, y+offset_y, x1+offset_x, y2+offset_y); }
void xyline(int x, int y, int x1, int y2, int x3) { Fl_Xlib_Graphics_Driver::xyline(x+offset_x, y+offset_y, x1+offset_x, y2+offset_y, x3+offset_x); }
void yxline(int x, int y, int y1) { Fl_Xlib_Graphics_Driver::yxline(x+offset_x, y+offset_y, y1+offset_y); }
void yxline(int x, int y, int y1, int x2) { Fl_Xlib_Graphics_Driver::yxline(x+offset_x, y+offset_y, y1+offset_y, x2+offset_x); }
void yxline(int x, int y, int y1, int x2, int y3) { Fl_Xlib_Graphics_Driver::yxline(x+offset_x, y+offset_y, y1+offset_y, x2+offset_x, y3+offset_y); }
void line(int x, int y, int x1, int y1) { Fl_Xlib_Graphics_Driver::line(x+offset_x, y+offset_y, x1+offset_x, y1+offset_y); }
void line(int x, int y, int x1, int y1, int x2, int y2) { Fl_Xlib_Graphics_Driver::line(x+offset_x, y+offset_y, x1+offset_x, y1+offset_y, x2+offset_x, y2+offset_y); }
void draw(const char* str, int n, int x, int y) {
Fl_Xlib_Graphics_Driver::draw(str, n, x+offset_x, y+offset_y);
}
void draw(int angle, const char *str, int n, int x, int y) {
Fl_Xlib_Graphics_Driver::draw(angle, str, n, x+offset_x, y+offset_y);
}
void rtl_draw(const char* str, int n, int x, int y) {
Fl_Xlib_Graphics_Driver::rtl_draw(str, n, x+offset_x, y+offset_y);
}
void draw(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy) {
XP += offset_x; YP += offset_y;
translate_all(-offset_x, -offset_y);
Fl_Xlib_Graphics_Driver::draw(pxm, XP, YP, WP,HP,cx,cy);
untranslate_all();
}
void draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy) {
XP += offset_x; YP += offset_y;
translate_all(-offset_x, -offset_y);
Fl_Xlib_Graphics_Driver::draw(bm, XP, YP, WP,HP,cx,cy);
untranslate_all();
}
void draw(Fl_RGB_Image *img, int XP, int YP, int WP, int HP, int cx, int cy) {
XP += offset_x; YP += offset_y;
translate_all(-offset_x, -offset_y);
Fl_Xlib_Graphics_Driver::draw(img, XP, YP, WP,HP,cx,cy);
untranslate_all();
}
void draw_image(const uchar* buf, int X,int Y,int W,int H, int D=3, int L=0) {
X += offset_x; Y += offset_y;
translate_all(-offset_x, -offset_y);
Fl_Xlib_Graphics_Driver::draw_image(buf, X, Y, W,H,D,L);
untranslate_all();
}
void draw_image(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=3) {
X += offset_x; Y += offset_y;
translate_all(-offset_x, -offset_y);
Fl_Xlib_Graphics_Driver::draw_image(cb, data, X, Y, W,H,D);
untranslate_all();
}
void draw_image_mono(const uchar* buf, int X,int Y,int W,int H, int D=1, int L=0) {
X += offset_x; Y += offset_y;
translate_all(-offset_x, -offset_y);
Fl_Xlib_Graphics_Driver::draw_image_mono(buf, X, Y, W,H,D,L);
untranslate_all();
}
void draw_image_mono(Fl_Draw_Image_Cb cb, void* data, int X,int Y,int W,int H, int D=1) {
X += offset_x; Y += offset_y;
translate_all(-offset_x, -offset_y);
Fl_Xlib_Graphics_Driver::draw_image_mono(cb, data, X, Y, W,H,D);
untranslate_all();
}
void copy_offscreen(int x, int y, int w, int h, Fl_Offscreen pixmap, int srcx, int srcy) {
Fl_Xlib_Graphics_Driver::copy_offscreen(x+offset_x, y+offset_y, w, h,pixmap,srcx,srcy);
}
void push_clip(int x, int y, int w, int h) {
Fl_Xlib_Graphics_Driver::push_clip(x+offset_x, y+offset_y, w, h);
}
int not_clipped(int x, int y, int w, int h) { return Fl_Xlib_Graphics_Driver::not_clipped(x + offset_x, y + offset_y, w, h); };
int clip_box(int x, int y, int w, int h, int& X, int& Y, int& W, int& H) {
int retval = Fl_Xlib_Graphics_Driver::clip_box(x + offset_x, y + offset_y, w,h,X,Y,W,H);
X -= offset_x;
Y -= offset_y;
return retval;
}
void pie(int x, int y, int w, int h, double a1, double a2) { Fl_Xlib_Graphics_Driver::pie(x+offset_x,y+offset_y,w,h,a1,a2); }
void arc(int x, int y, int w, int h, double a1, double a2) { Fl_Xlib_Graphics_Driver::arc(x+offset_x,y+offset_y,w,h,a1,a2); }
void polygon(int x0, int y0, int x1, int y1, int x2, int y2) { Fl_Xlib_Graphics_Driver::polygon(x0+offset_x,y0+offset_y,x1+offset_x,y1+offset_y,x2+offset_x,y2+offset_y);}
void polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3) {
Fl_Xlib_Graphics_Driver::polygon(x0+offset_x,y0+offset_y,x1+offset_x,y1+offset_y,x2+offset_x,y2+offset_y,x3+offset_x,y3+offset_y);
}
void loop(int x0, int y0, int x1, int y1, int x2, int y2) {Fl_Xlib_Graphics_Driver::loop(x0+offset_x,y0+offset_y,x1+offset_x,y1+offset_y,x2+offset_x,y2+offset_y);}
void loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3) {
Fl_Xlib_Graphics_Driver::loop(x0+offset_x,y0+offset_y,x1+offset_x,y1+offset_y,x2+offset_x,y2+offset_y,x3+offset_x,y3+offset_y);
}
void point(int x, int y) { Fl_Xlib_Graphics_Driver::point(x+offset_x, y+offset_y); }
};
const char *Fl_translated_Xlib_Graphics_Driver_::class_id = "Fl_translated_Xlib_Graphics_Driver_";
void Fl_Xlib_Surface_::translate(int x, int y) {
((Fl_translated_Xlib_Graphics_Driver_*)driver())->translate_all(x, y);
}
void Fl_Xlib_Surface_::untranslate() {
((Fl_translated_Xlib_Graphics_Driver_*)driver())->untranslate_all();
}
Fl_Xlib_Surface_::Fl_Xlib_Surface_() : Fl_Paged_Device() {
driver(new Fl_translated_Xlib_Graphics_Driver_());
}
Fl_Xlib_Surface_::~Fl_Xlib_Surface_() {
delete driver();
}
const char *Fl_Xlib_Surface_::class_id = "Fl_Xlib_Surface_";
#endif
//
// End of "$Id$".
//