Include a stripped-down version of FLTK in tree and add a USE_INCLUDED_FLTK option to build against it.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4603 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/fltk/src/Fl_Bitmap.cxx b/common/fltk/src/Fl_Bitmap.cxx
new file mode 100644
index 0000000..daef86a
--- /dev/null
+++ b/common/fltk/src/Fl_Bitmap.cxx
@@ -0,0 +1,482 @@
+//
+// "$Id: Fl_Bitmap.cxx 8360 2011-02-02 12:42:47Z manolo $"
+//
+// Bitmap drawing routines for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2010 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 on the following page:
+//
+// http://www.fltk.org/str.php
+//
+
+/** \fn Fl_Bitmap::Fl_Bitmap(const char *array, int W, int H)
+ The constructors create a new bitmap from the specified bitmap data.*/
+
+/** \fn Fl_Bitmap::Fl_Bitmap(const unsigned char *array, int W, int H)
+ The constructors create a new bitmap from the specified bitmap data.*/
+
+#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>
+#include <FL/Fl_Printer.H>
+#include "flstring.h"
+
+#if defined(__APPLE_QUARTZ__)
+
+
+Fl_Bitmask fl_create_bitmask(int w, int h, const uchar *array) {
+ static uchar reverse[16] = /* Bit reversal lookup table */
+ { 0x00, 0x88, 0x44, 0xcc, 0x22, 0xaa, 0x66, 0xee,
+ 0x11, 0x99, 0x55, 0xdd, 0x33, 0xbb, 0x77, 0xff };
+ int rowBytes = (w+7)>>3 ;
+ uchar *bmask = (uchar*)malloc(rowBytes*h), *dst = bmask;
+ const uchar *src = array;
+ for ( int i=rowBytes*h; i>0; i--,src++ ) {
+ *dst++ = ((reverse[*src & 0x0f] & 0xf0) | (reverse[(*src >> 4) & 0x0f] & 0x0f))^0xff;
+ }
+ CGDataProviderRef srcp = CGDataProviderCreateWithData( 0L, bmask, rowBytes*h, 0L);
+ CGImageRef id_ = CGImageMaskCreate( w, h, 1, 1, rowBytes, srcp, 0L, false);
+ CGDataProviderRelease(srcp);
+ return (Fl_Bitmask)id_;
+}
+void fl_delete_bitmask(Fl_Bitmask bm) {
+ if (bm) CGImageRelease((CGImageRef)bm);
+}
+
+
+#elif defined(WIN32) // Windows bitmask functions...
+
+
+// 'fl_create_bitmap()' - Create a 1-bit bitmap for drawing...
+static Fl_Bitmask fl_create_bitmap(int w, int h, const uchar *data) {
+ // 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 = data;
+ uchar* dest = newarray;
+ Fl_Bitmask bm;
+ 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++ = (uchar)((reverse[*src & 0x0f] & 0xf0) |
+ (reverse[(*src >> 4) & 0x0f] & 0x0f));
+ dest += w2-w1;
+ }
+
+ bm = CreateBitmap(w, h, 1, 1, newarray);
+
+ delete[] newarray;
+
+ return bm;
+}
+
+// 'fl_create_bitmask()' - Create an N-bit bitmap for masking...
+Fl_Bitmask fl_create_bitmask(int w, int h, const uchar *data) {
+ // this won't work when the user changes display mode during run or
+ // has two screens with differnet depths
+ Fl_Bitmask bm;
+ static uchar hiNibble[16] =
+ { 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
+ 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0 };
+ static uchar loNibble[16] =
+ { 0x00, 0x08, 0x04, 0x0c, 0x02, 0x0a, 0x06, 0x0e,
+ 0x01, 0x09, 0x05, 0x0d, 0x03, 0x0b, 0x07, 0x0f };
+ int np = GetDeviceCaps(fl_gc, PLANES); //: was always one on sample machines
+ int bpp = GetDeviceCaps(fl_gc, BITSPIXEL);//: 1,4,8,16,24,32 and more odd stuff?
+ int Bpr = (bpp*w+7)/8; //: bytes per row
+ int pad = Bpr&1, w1 = (w+7)/8, shr = ((w-1)&7)+1;
+ if (bpp==4) shr = (shr+1)/2;
+ uchar *newarray = new uchar[(Bpr+pad)*h];
+ uchar *dst = newarray;
+ const uchar *src = data;
+
+ for (int i=0; i<h; i++) {
+ // This is slooow, but we do it only once per pixmap
+ for (int j=w1; j>0; j--) {
+ uchar b = *src++;
+ if (bpp==1) {
+ *dst++ = (uchar)( hiNibble[b&15] ) | ( loNibble[(b>>4)&15] );
+ } else if (bpp==4) {
+ for (int k=(j==1)?shr:4; k>0; k--) {
+ *dst++ = (uchar)("\377\360\017\000"[b&3]);
+ b = b >> 2;
+ }
+ } else {
+ for (int k=(j==1)?shr:8; k>0; k--) {
+ if (b&1) {
+ *dst++=0;
+ if (bpp>8) *dst++=0;
+ if (bpp>16) *dst++=0;
+ if (bpp>24) *dst++=0;
+ } else {
+ *dst++=0xff;
+ if (bpp>8) *dst++=0xff;
+ if (bpp>16) *dst++=0xff;
+ if (bpp>24) *dst++=0xff;
+ }
+
+ b = b >> 1;
+ }
+ }
+ }
+
+ dst += pad;
+ }
+
+ bm = CreateBitmap(w, h, np, bpp, newarray);
+ delete[] newarray;
+
+ return bm;
+}
+
+
+void fl_delete_bitmask(Fl_Bitmask bm) {
+ DeleteObject((HGDIOBJ)bm);
+}
+
+
+#else // X11 bitmask functions
+
+
+Fl_Bitmask fl_create_bitmask(int w, int h, const uchar *data) {
+ return XCreateBitmapFromData(fl_display, fl_window, (const char *)data,
+ (w+7)&-8, h);
+}
+
+void fl_delete_bitmask(Fl_Bitmask bm) {
+ fl_delete_offscreen((Fl_Offscreen)bm);
+}
+
+
+#endif // __APPLE__
+
+
+// Create a 1-bit mask used for alpha blending
+Fl_Bitmask fl_create_alphamask(int w, int h, int d, int ld, const uchar *array) {
+ Fl_Bitmask bm;
+ int bmw = (w + 7) / 8;
+ uchar *bitmap = new uchar[bmw * h];
+ uchar *bitptr, bit;
+ const uchar *dataptr;
+ int x, y;
+ static uchar dither[16][16] = { // Simple 16x16 Floyd dither
+ { 0, 128, 32, 160, 8, 136, 40, 168,
+ 2, 130, 34, 162, 10, 138, 42, 170 },
+ { 192, 64, 224, 96, 200, 72, 232, 104,
+ 194, 66, 226, 98, 202, 74, 234, 106 },
+ { 48, 176, 16, 144, 56, 184, 24, 152,
+ 50, 178, 18, 146, 58, 186, 26, 154 },
+ { 240, 112, 208, 80, 248, 120, 216, 88,
+ 242, 114, 210, 82, 250, 122, 218, 90 },
+ { 12, 140, 44, 172, 4, 132, 36, 164,
+ 14, 142, 46, 174, 6, 134, 38, 166 },
+ { 204, 76, 236, 108, 196, 68, 228, 100,
+ 206, 78, 238, 110, 198, 70, 230, 102 },
+ { 60, 188, 28, 156, 52, 180, 20, 148,
+ 62, 190, 30, 158, 54, 182, 22, 150 },
+ { 252, 124, 220, 92, 244, 116, 212, 84,
+ 254, 126, 222, 94, 246, 118, 214, 86 },
+ { 3, 131, 35, 163, 11, 139, 43, 171,
+ 1, 129, 33, 161, 9, 137, 41, 169 },
+ { 195, 67, 227, 99, 203, 75, 235, 107,
+ 193, 65, 225, 97, 201, 73, 233, 105 },
+ { 51, 179, 19, 147, 59, 187, 27, 155,
+ 49, 177, 17, 145, 57, 185, 25, 153 },
+ { 243, 115, 211, 83, 251, 123, 219, 91,
+ 241, 113, 209, 81, 249, 121, 217, 89 },
+ { 15, 143, 47, 175, 7, 135, 39, 167,
+ 13, 141, 45, 173, 5, 133, 37, 165 },
+ { 207, 79, 239, 111, 199, 71, 231, 103,
+ 205, 77, 237, 109, 197, 69, 229, 101 },
+ { 63, 191, 31, 159, 55, 183, 23, 151,
+ 61, 189, 29, 157, 53, 181, 21, 149 },
+ { 254, 127, 223, 95, 247, 119, 215, 87,
+ 253, 125, 221, 93, 245, 117, 213, 85 }
+ };
+
+ // Generate a 1-bit "screen door" alpha mask; not always pretty, but
+ // definitely fast... In the future we may be able to support things
+ // like the RENDER extension in XFree86, when available, to provide
+ // true RGBA-blended rendering. See:
+ //
+ // http://www.xfree86.org/~keithp/render/protocol.html
+ //
+ // for more info on XRender...
+ //
+ // MacOS already provides alpha blending support and has its own
+ // fl_create_alphamask() function...
+ memset(bitmap, 0, bmw * h);
+
+ for (dataptr = array + d - 1, y = 0; y < h; y ++, dataptr += ld)
+ for (bitptr = bitmap + y * bmw, bit = 1, x = 0; x < w; x ++, dataptr += d) {
+ if (*dataptr > dither[x & 15][y & 15])
+ *bitptr |= bit;
+ if (bit < 128) bit <<= 1;
+ else {
+ bit = 1;
+ bitptr ++;
+ }
+ }
+
+ bm = fl_create_bitmask(w, h, bitmap);
+ delete[] bitmap;
+
+ return (bm);
+}
+
+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 &X, int &Y, int &W, int &H)
+{
+ // 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 (W <= 0) return 1;
+ if (cy < 0) {H += cy; Y -= cy; cy = 0;}
+ if (cy+H > h) H = h-cy;
+ if (H <= 0) return 1;
+ 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);
+ 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());
+ CGContextDrawImage(fl_gc, rect, (CGImageRef)bm->id_);
+ Fl_X::q_end_image();
+ }
+}
+
+#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);
+ 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);
+
+ typedef BOOL (WINAPI* fl_transp_func) (HDC,int,int,int,int,HDC,int,int,int,int,UINT);
+ static fl_transp_func fl_TransparentBlt;
+ HDC tempdc;
+ int save;
+ BOOL use_print_algo = false;
+ if (Fl_Surface_Device::surface()->class_name() == Fl_Printer::class_id) {
+ 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_Offscreen tmp_id = fl_create_offscreen(W, H);
+ fl_begin_offscreen(tmp_id);
+ 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_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);
+ }
+ RestoreDC(tempdc, save);
+ DeleteDC(tempdc);
+}
+
+#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);
+ 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();
+ int oy = Y-cy; if (oy < 0) oy += bm->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
+
+/**
+ The destructor free all memory and server resources that are used by
+ the bitmap.
+*/
+Fl_Bitmap::~Fl_Bitmap() {
+ uncache();
+ if (alloc_array) delete[] (uchar *)array;
+}
+
+void Fl_Bitmap::uncache() {
+ if (id_) {
+#ifdef __APPLE_QUARTZ__
+ fl_delete_bitmask((Fl_Bitmask)id_);
+#else
+ fl_delete_bitmask((Fl_Offscreen)id_);
+#endif
+ id_ = 0;
+ }
+}
+
+void Fl_Bitmap::label(Fl_Widget* widget) {
+ widget->image(this);
+}
+
+void Fl_Bitmap::label(Fl_Menu_Item* m) {
+ Fl::set_labeltype(_FL_IMAGE_LABEL, labeltype, measure);
+ m->label(_FL_IMAGE_LABEL, (const char*)this);
+}
+
+Fl_Image *Fl_Bitmap::copy(int W, int H) {
+ Fl_Bitmap *new_image; // New RGB image
+ uchar *new_array; // New array for image data
+
+ // Optimize the simple copy where the width and height are the same...
+ if (W == w() && H == h()) {
+ new_array = new uchar [H * ((W + 7) / 8)];
+ memcpy(new_array, array, H * ((W + 7) / 8));
+
+ new_image = new Fl_Bitmap(new_array, W, H);
+ new_image->alloc_array = 1;
+
+ return new_image;
+ }
+ if (W <= 0 || H <= 0) return 0;
+
+ // OK, need to resize the image data; allocate memory and
+ uchar *new_ptr, // Pointer into new array
+ new_bit, // Bit for new array
+ old_bit; // Bit for old array
+ const uchar *old_ptr; // Pointer into old array
+ int sx, sy, // Source coordinates
+ dx, dy, // Destination coordinates
+ xerr, yerr, // X & Y errors
+ xmod, ymod, // X & Y moduli
+ xstep, ystep; // X & Y step increments
+
+
+ // Figure out Bresenheim step/modulus values...
+ xmod = w() % W;
+ xstep = w() / W;
+ ymod = h() % H;
+ ystep = h() / H;
+
+ // Allocate memory for the new image...
+ new_array = new uchar [H * ((W + 7) / 8)];
+ new_image = new Fl_Bitmap(new_array, W, H);
+ new_image->alloc_array = 1;
+
+ memset(new_array, 0, H * ((W + 7) / 8));
+
+ // Scale the image using a nearest-neighbor algorithm...
+ for (dy = H, sy = 0, yerr = H, new_ptr = new_array; dy > 0; dy --) {
+ for (dx = W, xerr = W, old_ptr = array + sy * ((w() + 7) / 8), sx = 0, new_bit = 1;
+ dx > 0;
+ dx --) {
+ old_bit = (uchar)(1 << (sx & 7));
+ if (old_ptr[sx / 8] & old_bit) *new_ptr |= new_bit;
+
+ if (new_bit < 128) new_bit <<= 1;
+ else {
+ new_bit = 1;
+ new_ptr ++;
+ }
+
+ sx += xstep;
+ xerr -= xmod;
+
+ if (xerr <= 0) {
+ xerr += W;
+ sx ++;
+ }
+ }
+
+ if (new_bit > 1) new_ptr ++;
+
+ sy += ystep;
+ yerr -= ymod;
+ if (yerr <= 0) {
+ yerr += H;
+ sy ++;
+ }
+ }
+
+ return new_image;
+}
+
+
+//
+// End of "$Id: Fl_Bitmap.cxx 8360 2011-02-02 12:42:47Z manolo $".
+//