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Better separate printer-specific code using virtual Fl_GDI_Printer_Graphics_Driver::draw(Fl_Bitmap*...)

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git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10110 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy 2014-02-22 14:51:50 +00:00
parent 291a25f547
commit 56ac442c93
3 changed files with 68 additions and 64 deletions
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4
FL/Fl_Bitmap.H
View File

@ -33,6 +33,7 @@ struct Fl_Menu_Item;
class FL_EXPORT Fl_Bitmap : public Fl_Image {
friend class Fl_Quartz_Graphics_Driver;
friend class Fl_GDI_Graphics_Driver;
friend class Fl_GDI_Printer_Graphics_Driver;
friend class Fl_Xlib_Graphics_Driver;
public:
@ -42,7 +43,8 @@ public:
int alloc_array;
private:
int start(int XP, int YP, int WP, int HP, int &cx, int &cy,
int &X, int &Y, int &W, int &H);
#if defined(__APPLE__) || defined(WIN32)
/** for internal use */
void *id_;

1
FL/Fl_Device.H
View File

@ -482,6 +482,7 @@ public:
static const char *class_id;
const char *class_name() {return class_id;};
void draw(Fl_Pixmap *pxm, int XP, int YP, int WP, int HP, int cx, int cy);
void draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy);
};
#endif
#if !(defined(__APPLE__) || defined(WIN32))

127
src/Fl_Bitmap.cxx
View File

@ -243,33 +243,37 @@ void Fl_Bitmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
fl_graphics_driver->draw(this, XP, YP, WP, HP, cx, cy);
}
static int start(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int w, int h, int &cx, int &cy,
int Fl_Bitmap::start(int XP, int YP, int WP, int HP, int &cx, int &cy,
int &X, int &Y, int &W, int &H)
{
if (!array) {
draw_empty(XP, YP);
return 1;
}
// account for current clip region (faster on Irix):
fl_clip_box(XP,YP,WP,HP,X,Y,W,H);
cx += X-XP; cy += Y-YP;
// clip the box down to the size of image, quit if empty:
if (cx < 0) {W += cx; X -= cx; cx = 0;}
if (cx+W > w) W = w-cx;
if (cx+W > w()) W = w()-cx;
if (W <= 0) return 1;
if (cy < 0) {H += cy; Y -= cy; cy = 0;}
if (cy+H > h) H = h-cy;
if (cy+H > h()) H = h()-cy;
if (H <= 0) return 1;
#if defined(WIN32)
if (!id_) id_ = fl_create_bitmap(w(), h(), array);
#else
if (!id_) id_ = fl_create_bitmask(w(), h(), array);
#endif
return 0;
}
#ifdef __APPLE__
void Fl_Quartz_Graphics_Driver::draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy) {
int X, Y, W, H;
if (!bm->array) {
bm->draw_empty(XP, YP);
if (bm->start(XP, YP, WP, HP, cx, cy, X, Y, W, H)) {
return;
}
if (start(bm, XP, YP, WP, HP, bm->w(), bm->h(), cx, cy, X, Y, W, H)) {
return;
}
if (!bm->id_) bm->id_ = fl_create_bitmask(bm->w(), bm->h(), bm->array);
if (bm->id_ && fl_gc) {
CGRect rect = { { X, Y }, { W, H } };
Fl_X::q_begin_image(rect, cx, cy, bm->w(), bm->h());
@ -281,60 +285,62 @@ void Fl_Quartz_Graphics_Driver::draw(Fl_Bitmap *bm, int XP, int YP, int WP, int
#elif defined(WIN32)
void Fl_GDI_Graphics_Driver::draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy) {
int X, Y, W, H;
if (!bm->array) {
bm->draw_empty(XP, YP);
if (bm->start(XP, YP, WP, HP, cx, cy, X, Y, W, H)) {
return;
}
if (start(bm, XP, YP, WP, HP, bm->w(), bm->h(), cx, cy, X, Y, W, H)) {
return;
}
if (!bm->id_) bm->id_ = fl_create_bitmap(bm->w(), bm->h(), bm->array);
HDC tempdc = CreateCompatibleDC(fl_gc);
int save = SaveDC(tempdc);
SelectObject(tempdc, (HGDIOBJ)bm->id_);
SelectObject(fl_gc, fl_brush());
// secret bitblt code found in old MSWindows reference manual:
BitBlt(fl_gc, X, Y, W, H, tempdc, cx, cy, 0xE20746L);
RestoreDC(tempdc, save);
DeleteDC(tempdc);
}
void Fl_GDI_Printer_Graphics_Driver::draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy) {
int X, Y, W, H;
typedef BOOL (WINAPI* fl_transp_func) (HDC,int,int,int,int,HDC,int,int,int,int,UINT);
static fl_transp_func fl_TransparentBlt;
static fl_transp_func fl_TransparentBlt = NULL;
static HMODULE hMod = NULL;
if (!hMod) {
hMod = LoadLibrary("MSIMG32.DLL");
if (hMod) fl_TransparentBlt = (fl_transp_func)GetProcAddress(hMod, "TransparentBlt");
}
if (!fl_TransparentBlt) {
Fl_GDI_Graphics_Driver::draw(bm, XP, YP, WP, HP, cx, cy);
return;
}
if (bm->start(XP, YP, WP, HP, cx, cy, X, Y, W, H)) {
return;
}
HDC tempdc;
int save;
BOOL use_print_algo = false;
if (Fl_Surface_Device::surface() != Fl_Display_Device::display_device()) {
static HMODULE hMod = NULL;
if (!hMod) {
hMod = LoadLibrary("MSIMG32.DLL");
if (hMod) fl_TransparentBlt = (fl_transp_func)GetProcAddress(hMod, "TransparentBlt");
}
if (fl_TransparentBlt) use_print_algo = true;
}
if (use_print_algo) { // algorithm for bitmap output to Fl_GDI_Printer
Fl_Color save_c = fl_color(); // save bitmap's desired color
uchar r, g, b;
Fl::get_color(save_c, r, g, b);
r = 255-r;
g = 255-g;
b = 255-b;
Fl_Color background = fl_rgb_color(r, g, b); // a color very different from the bitmap's
Fl_Offscreen tmp_id = fl_create_offscreen(W, H);
fl_begin_offscreen(tmp_id);
fl_color(background);
fl_rectf(0,0,W,H); // use this color as offscreen background
fl_color(save_c); // back to bitmap's color
tempdc = CreateCompatibleDC(fl_gc);
save = SaveDC(tempdc);
SelectObject(tempdc, (HGDIOBJ)bm->id_);
SelectObject(fl_gc, fl_brush()); // use bitmap's desired color
BitBlt(fl_gc, 0, 0, W, H, tempdc, 0, 0, 0xE20746L); // draw bitmap to offscreen
fl_end_offscreen(); // offscreen data is in tmp_id
SelectObject(tempdc, (HGDIOBJ)tmp_id); // use offscreen data
// draw it to printer context with background color as transparent
fl_TransparentBlt(fl_gc, X,Y,W,H, tempdc, cx, cy, bm->w(), bm->h(), RGB(r, g, b) );
fl_delete_offscreen(tmp_id);
}
else { // algorithm for bitmap output to display
tempdc = CreateCompatibleDC(fl_gc);
save = SaveDC(tempdc);
SelectObject(tempdc, (HGDIOBJ)bm->id_);
SelectObject(fl_gc, fl_brush());
// secret bitblt code found in old MSWindows reference manual:
BitBlt(fl_gc, X, Y, W, H, tempdc, cx, cy, 0xE20746L);
}
// algorithm for bitmap output to Fl_GDI_Printer
Fl_Color save_c = fl_color(); // save bitmap's desired color
uchar r, g, b;
Fl::get_color(save_c, r, g, b);
r = 255-r;
g = 255-g;
b = 255-b;
Fl_Color background = fl_rgb_color(r, g, b); // a color very different from the bitmap's
Fl_Offscreen tmp_id = fl_create_offscreen(W, H);
fl_begin_offscreen(tmp_id);
fl_color(background);
fl_rectf(0,0,W,H); // use this color as offscreen background
fl_color(save_c); // back to bitmap's color
tempdc = CreateCompatibleDC(fl_gc);
save = SaveDC(tempdc);
SelectObject(tempdc, (HGDIOBJ)bm->id_);
SelectObject(fl_gc, fl_brush()); // use bitmap's desired color
BitBlt(fl_gc, 0, 0, W, H, tempdc, 0, 0, 0xE20746L); // draw bitmap to offscreen
fl_end_offscreen(); // offscreen data is in tmp_id
SelectObject(tempdc, (HGDIOBJ)tmp_id); // use offscreen data
// draw it to printer context with background color as transparent
fl_TransparentBlt(fl_gc, X,Y,W,H, tempdc, cx, cy, bm->w(), bm->h(), RGB(r, g, b) );
fl_delete_offscreen(tmp_id);
RestoreDC(tempdc, save);
DeleteDC(tempdc);
}
@ -342,14 +348,9 @@ void Fl_GDI_Graphics_Driver::draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP,
#else // Xlib
void Fl_Xlib_Graphics_Driver::draw(Fl_Bitmap *bm, int XP, int YP, int WP, int HP, int cx, int cy) {
int X, Y, W, H;
if (!bm->array) {
bm->draw_empty(XP, YP);
if (bm->start(XP, YP, WP, HP, cx, cy, X, Y, W, H)) {
return;
}
if (start(bm, XP, YP, WP, HP, bm->w(), bm->h(), cx, cy, X, Y, W, H)) {
return;
}
if (!bm->id_) bm->id_ = fl_create_bitmask(bm->w(), bm->h(), bm->array);
XSetStipple(fl_display, fl_gc, bm->id_);
int ox = X-cx; if (ox < 0) ox += bm->w();