1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
//
// "$Id: Fl_Bitmap.cxx,v 1.5.2.3 2000/06/05 21:20:47 mike Exp $"
//
// Bitmap drawing routines for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2000 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
#include <FL/Fl.H>
#include <FL/x.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Widget.H>
#include <FL/Fl_Menu_Item.H>
#include <FL/Fl_Bitmap.H>
void Fl_Bitmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) {
// 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;
#ifdef WIN32
if (!id) {
// 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 = array;
uchar* dest = newarray;
static uchar reverse[16] = /* Bit reversal lookup table */
{ 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;
}
id = (ulong)CreateBitmap(w, h, 1, 1, newarray);
array = newarray; // keep the pointer so I can free it later
}
HDC tempdc = CreateCompatibleDC(fl_gc);
SelectObject(tempdc, (HGDIOBJ)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);
DeleteDC(tempdc);
#else
if (!id) id = XCreateBitmapFromData(fl_display, fl_window,
(const char*)array, (w+7)&-8, h);
XSetStipple(fl_display, fl_gc, id);
int ox = X-cx; if (ox < 0) ox += w;
int oy = Y-cy; if (oy < 0) oy += h;
XSetTSOrigin(fl_display, fl_gc, ox, oy);
XSetFillStyle(fl_display, fl_gc, FillStippled);
XFillRectangle(fl_display, fl_window, fl_gc, X, Y, W, H);
XSetFillStyle(fl_display, fl_gc, FillSolid);
#endif
}
Fl_Bitmap::~Fl_Bitmap() {
#ifdef WIN32
if (id) {
DeleteObject((HGDIOBJ)id);
delete[] (uchar*)array;
}
#else
if (id) fl_delete_offscreen((Fl_Offscreen)id);
#endif
}
static void bitmap_labeltype(
const Fl_Label* o, int x, int y, int w, int h, Fl_Align a)
{
Fl_Bitmap* b = (Fl_Bitmap*)(o->value);
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;
fl_color((Fl_Color)o->color);
b->draw(x,y,w,h,cx,cy);
}
static void bitmap_measure(const Fl_Label* o, int& w, int& h) {
Fl_Bitmap* b = (Fl_Bitmap*)(o->value);
w = b->w;
h = b->h;
}
void Fl_Bitmap::label(Fl_Widget* o) {
Fl::set_labeltype(_FL_BITMAP_LABEL, bitmap_labeltype, bitmap_measure);
o->label(_FL_BITMAP_LABEL, (const char*)this);
}
void Fl_Bitmap::label(Fl_Menu_Item* o) {
Fl::set_labeltype(_FL_BITMAP_LABEL, bitmap_labeltype, bitmap_measure);
o->label(_FL_BITMAP_LABEL, (const char*)this);
}
//
// End of "$Id: Fl_Bitmap.cxx,v 1.5.2.3 2000/06/05 21:20:47 mike Exp $".
//
|
