diff options
Diffstat (limited to 'src/Fl_Bitmap.cxx')
| -rw-r--r-- | src/Fl_Bitmap.cxx | 99 |
1 files changed, 94 insertions, 5 deletions
diff --git a/src/Fl_Bitmap.cxx b/src/Fl_Bitmap.cxx index 18d474fb7..887d57603 100644 --- a/src/Fl_Bitmap.cxx +++ b/src/Fl_Bitmap.cxx @@ -1,5 +1,5 @@ // -// "$Id: Fl_Bitmap.cxx,v 1.5.2.4.2.3 2001/11/19 01:06:45 easysw Exp $" +// "$Id: Fl_Bitmap.cxx,v 1.5.2.4.2.4 2001/11/19 20:59:59 easysw Exp $" // // Bitmap drawing routines for the Fast Light Tool Kit (FLTK). // @@ -32,7 +32,94 @@ #include <string.h> #ifdef 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 id; + 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 = CreateBitmap(w, h, 1, 1, newarray); + + delete[] newarray; + + return id; +} + +// '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 id; + 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++ = ( hiNibble[b&15] ) | ( loNibble[(b>>4)&15] ); + } else if (bpp==4) { + for (int k=(j==1)?shr:4; k>0; k--) { + *dst++ = "\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; + } + + id = CreateBitmap(w, h, np, bpp, newarray); + delete[] newarray; + + return id; +} + +Fl_Bitmask fl_create_bitmask(int w, int h, const uchar *data, int for_mask) { // we need to pad the lines out to words & swap the bits // in each byte. int w1 = (w+7)/8; @@ -84,9 +171,9 @@ void Fl_Bitmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) { if (cy < 0) {H += cy; Y -= cy; cy = 0;} if ((cy+H) > h()) H = h()-cy; if (H <= 0) return; - if (!id) id = fl_create_bitmask(w(), h(), array); - #ifdef WIN32 + if (!id) id = fl_create_bitmap(w(), h(), array); + HDC tempdc = CreateCompatibleDC(fl_gc); SelectObject(tempdc, (HGDIOBJ)id); SelectObject(fl_gc, fl_brush()); @@ -94,6 +181,8 @@ void Fl_Bitmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) { BitBlt(fl_gc, X, Y, W, H, tempdc, cx, cy, 0xE20746L); DeleteDC(tempdc); #else + if (!id) id = fl_create_bitmask(w(), h(), array); + XSetStipple(fl_display, fl_gc, id); int ox = X-cx; if (ox < 0) ox += w(); int oy = Y-cy; if (oy < 0) oy += h(); @@ -106,7 +195,7 @@ void Fl_Bitmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) { Fl_Bitmap::~Fl_Bitmap() { if (id) fl_delete_bitmask(id); - if (alloc_array) delete[] array; + if (alloc_array) delete[] (uchar *)array; } void Fl_Bitmap::label(Fl_Widget* w) { @@ -184,5 +273,5 @@ Fl_Image *Fl_Bitmap::copy(int W, int H) { } // -// End of "$Id: Fl_Bitmap.cxx,v 1.5.2.4.2.3 2001/11/19 01:06:45 easysw Exp $". +// End of "$Id: Fl_Bitmap.cxx,v 1.5.2.4.2.4 2001/11/19 20:59:59 easysw Exp $". // |