mirrors/fltk
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added support for transparent pixmaps in WIN32...

Browse Source 
git-svn-id: file:///fltk/svn/fltk/trunk@130 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Michael R Sweet 1998-12-06 15:12:23 +00:00
parent fd90251c29
commit 29b31b7013
1 changed files with 37 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
src/Fl_Pixmap.cxx
View File

@ -1,5 +1,5 @@
//
// "$Id: Fl_Pixmap.cxx,v 1.5 1998/12/03 13:28:21 mike Exp $"
// "$Id: Fl_Pixmap.cxx,v 1.6 1998/12/06 15:12:23 mike Exp $"
//
// Pixmap drawing code for the Fast Light Tool Kit (FLTK).
//
@ -44,7 +44,7 @@ void Fl_Pixmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
// ignore empty or bad pixmap data:
if (w<0) {
fl_measure_pixmap(data, w, h);
if (WP==-1) { WP = w; HP = h; } // correct the default setting
if (WP==-1) { WP = w; HP = h; }
}
if (!w) return;
// account for current clip region (faster on Irix):
@ -60,13 +60,32 @@ void Fl_Pixmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
if (!id) {
id = (ulong)fl_create_offscreen(w, h);
fl_begin_offscreen((Fl_Offscreen)id);
#ifdef WIN32 // mask is nyi, instead use a constant color
fl_draw_pixmap(data, 0, 0, (Fl_Color)mask);
#else
uchar *bitmap = 0;
fl_mask_bitmap = &bitmap;
fl_draw_pixmap(data, 0, 0, FL_BLACK);
fl_mask_bitmap = 0;
#ifdef WIN32 // Matt: mask done
if (bitmap) {
// we need to pad the lines out to words & swap the bits
// in each byte.
int w1 = (w+7)/8;
int w2 = ((w+15)/16)*2;
uchar* newarray = new uchar[w2*h];
const uchar* src = bitmap;
uchar* dest = newarray;
static uchar reverse[16] =
{ 0x00, 0x88, 0x44, 0xcc, 0x22, 0xaa, 0x66, 0xee,
0x11, 0x99, 0x55, 0xdd, 0x33, 0xbb, 0x77, 0xff };
for (int y=0; y < h; y++) {
for (int n = 0; n < w1; n++, src++)
*dest++ = ~((reverse[*src & 0x0f] & 0xf0) |
(reverse[(*src >> 4) & 0x0f] & 0x0f));
dest += w2-w1;
}
mask = (ulong)CreateBitmap(w, h, 1, 1, newarray);
delete[] newarray;
}
#else
if (bitmap) {
mask = XCreateBitmapFromData(fl_display, fl_window,
(const char*)bitmap, (w+7)&-8, h);
@ -75,7 +94,18 @@ void Fl_Pixmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
#endif
fl_end_offscreen();
}
#ifndef WIN32
#ifdef WIN32
if (mask) {
HDC new_gc = CreateCompatibleDC(fl_gc);
SelectObject(new_gc, (void*)mask);
BitBlt(fl_gc, X, Y, W, H, new_gc, cx, cy, SRCAND);
SelectObject(new_gc, (void*)id);
BitBlt(fl_gc, X, Y, W, H, new_gc, cx, cy, SRCPAINT);
DeleteDC(new_gc);
} else {
fl_copy_offscreen(X, Y, W, H, (Fl_Offscreen)id, cx, cy);
}
#else
if (mask) {
// I can't figure out how to combine a mask with existing region,
// so cut the image down to a clipped rectangle:
@ -88,9 +118,7 @@ void Fl_Pixmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
int oy = Y-cy; if (oy < 0) oy += h;
XSetClipOrigin(fl_display, fl_gc, X-cx, Y-cy);
}
#endif
fl_copy_offscreen(X, Y, W, H, (Fl_Offscreen)id, cx, cy);
#ifndef WIN32
if (mask) {
// put the old clip region back
XSetClipOrigin(fl_display, fl_gc, 0, 0);
@ -101,9 +129,7 @@ void Fl_Pixmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
Fl_Pixmap::~Fl_Pixmap() {
if (id) fl_delete_offscreen((Fl_Offscreen)id);
#ifndef WIN32
if (mask) fl_delete_offscreen((Fl_Offscreen)mask);
#endif
}
static void pixmap_labeltype(
@ -130,9 +156,6 @@ static void pixmap_measure(const Fl_Label* o, int& w, int& h) {
}
void Fl_Pixmap::label(Fl_Widget* o) {
#ifdef WIN32
mask = o->color();
#endif
Fl::set_labeltype(_FL_PIXMAP_LABEL, pixmap_labeltype, pixmap_measure);
o->label(_FL_PIXMAP_LABEL, (const char*)this);
}
@ -143,5 +166,5 @@ void Fl_Pixmap::label(Fl_Menu_Item* o) {
}
//
// End of "$Id: Fl_Pixmap.cxx,v 1.5 1998/12/03 13:28:21 mike Exp $".
// End of "$Id: Fl_Pixmap.cxx,v 1.6 1998/12/06 15:12:23 mike Exp $".
//