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// Fl_Pixmap.C
// Draws X pixmap data, keeping it stashed in a server pixmap so it
// redraws fast.
// See fl_draw_pixmap.C for code used to get the actual data into pixmap.
// Implemented without using the xpm library (which I can't use because
// it interferes with the color cube used by fl_draw_image).
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <FL/x.H>
#include <FL/Fl_Widget.H>
#include <FL/Fl_Menu_Item.H>
#include <FL/Fl_Pixmap.H>
extern uchar **fl_mask_bitmap; // used by fl_draw_pixmap.C to store mask
void fl_restore_clip(); // in fl_rect.C
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 (!w) return;
// account for current clip region (faster on Irix):
int X,Y,W,H; 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 (W <= 0) return;
if (cy < 0) {H += cy; Y -= cy; cy = 0;}
if (cy+H > h) H = h-cy;
if (H <= 0) return;
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;
if (bitmap) {
mask = XCreateBitmapFromData(fl_display, fl_window,
(const char*)bitmap, (w+7)&-8, h);
delete[] bitmap;
}
#endif
fl_end_offscreen();
}
#ifndef WIN32
if (mask) {
// I can't figure out how to combine a mask with existing region,
// so cut the image down to a clipped rectangle:
int nx, ny; fl_clip_box(X,Y,W,H,nx,ny,W,H);
cx += nx-X; X = nx;
cy += ny-Y; Y = ny;
// make X use the bitmap as a mask:
XSetClipMask(fl_display, fl_gc, mask);
int ox = X-cx; if (ox < 0) ox += w;
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);
fl_restore_clip();
}
#endif
}
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(
const Fl_Label* o, int x, int y, int w, int h, Fl_Align a)
{
Fl_Pixmap* b = (Fl_Pixmap*)(o->value);
if (b->w<0) fl_measure_pixmap(b->data, b->w, b->h);
int cx;
if (a & FL_ALIGN_LEFT) cx = 0;
else if (a & FL_ALIGN_RIGHT) cx = b->w-w;
else cx = (b->w-w)/2;
int cy;
if (a & FL_ALIGN_TOP) cy = 0;
else if (a & FL_ALIGN_BOTTOM) cy = b->h-h;
else cy = (b->h-h)/2;
b->draw(x,y,w,h,cx,cy);
}
static void pixmap_measure(const Fl_Label* o, int& w, int& h) {
Fl_Pixmap* b = (Fl_Pixmap*)(o->value);
if (b->w<0) fl_measure_pixmap(b->data, b->w, b->h);
w = b->w;
h = b->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);
}
void Fl_Pixmap::label(Fl_Menu_Item* o) {
Fl::set_labeltype(_FL_PIXMAP_LABEL, pixmap_labeltype, pixmap_measure);
o->label(_FL_PIXMAP_LABEL, (const char*)this);
}
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