1265 lines
32 KiB
C
1265 lines
32 KiB
C
/*
|
||
* tkWinDraw.c --
|
||
*
|
||
* This file contains the Xlib emulation functions pertaining to
|
||
* actually drawing objects on a window.
|
||
*
|
||
* Copyright (c) 1995 Sun Microsystems, Inc.
|
||
* Copyright (c) 1994 Software Research Associates, Inc.
|
||
*
|
||
* See the file "license.terms" for information on usage and redistribution
|
||
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
||
*
|
||
* SCCS: @(#) tkWinDraw.c 1.30 97/03/21 11:20:05
|
||
*/
|
||
|
||
#include "tkWinInt.h"
|
||
|
||
/*
|
||
* These macros convert between X's bizarre angle units to radians.
|
||
*/
|
||
|
||
#define PI 3.14159265358979
|
||
#define XAngleToRadians(a) ((double)(a) / 64 * PI / 180);
|
||
|
||
/*
|
||
* Translation table between X gc functions and Win32 raster op modes.
|
||
*/
|
||
|
||
int tkpWinRopModes[] = {
|
||
R2_BLACK, /* GXclear */
|
||
R2_MASKPEN, /* GXand */
|
||
R2_MASKPENNOT, /* GXandReverse */
|
||
R2_COPYPEN, /* GXcopy */
|
||
R2_MASKNOTPEN, /* GXandInverted */
|
||
R2_NOT, /* GXnoop */
|
||
R2_XORPEN, /* GXxor */
|
||
R2_MERGEPEN, /* GXor */
|
||
R2_NOTMERGEPEN, /* GXnor */
|
||
R2_NOTXORPEN, /* GXequiv */
|
||
R2_NOT, /* GXinvert */
|
||
R2_MERGEPENNOT, /* GXorReverse */
|
||
R2_NOTCOPYPEN, /* GXcopyInverted */
|
||
R2_MERGENOTPEN, /* GXorInverted */
|
||
R2_NOTMASKPEN, /* GXnand */
|
||
R2_WHITE /* GXset */
|
||
};
|
||
|
||
/*
|
||
* Translation table between X gc functions and Win32 BitBlt op modes. Some
|
||
* of the operations defined in X don't have names, so we have to construct
|
||
* new opcodes for those functions. This is arcane and probably not all that
|
||
* useful, but at least it's accurate.
|
||
*/
|
||
|
||
#define NOTSRCAND (DWORD)0x00220326 /* dest = (NOT source) AND dest */
|
||
#define NOTSRCINVERT (DWORD)0x00990066 /* dest = (NOT source) XOR dest */
|
||
#define SRCORREVERSE (DWORD)0x00DD0228 /* dest = source OR (NOT dest) */
|
||
#define SRCNAND (DWORD)0x007700E6 /* dest = NOT (source AND dest) */
|
||
|
||
static int bltModes[] = {
|
||
BLACKNESS, /* GXclear */
|
||
SRCAND, /* GXand */
|
||
SRCERASE, /* GXandReverse */
|
||
SRCCOPY, /* GXcopy */
|
||
NOTSRCAND, /* GXandInverted */
|
||
PATCOPY, /* GXnoop */
|
||
SRCINVERT, /* GXxor */
|
||
SRCPAINT, /* GXor */
|
||
NOTSRCERASE, /* GXnor */
|
||
NOTSRCINVERT, /* GXequiv */
|
||
DSTINVERT, /* GXinvert */
|
||
SRCORREVERSE, /* GXorReverse */
|
||
NOTSRCCOPY, /* GXcopyInverted */
|
||
MERGEPAINT, /* GXorInverted */
|
||
SRCNAND, /* GXnand */
|
||
WHITENESS /* GXset */
|
||
};
|
||
|
||
/*
|
||
* The following raster op uses the source bitmap as a mask for the
|
||
* pattern. This is used to draw in a foreground color but leave the
|
||
* background color transparent.
|
||
*/
|
||
|
||
#define MASKPAT 0x00E20746 /* dest = (src & pat) | (!src & dst) */
|
||
|
||
/*
|
||
* The following two raster ops are used to copy the foreground and background
|
||
* bits of a source pattern as defined by a stipple used as the pattern.
|
||
*/
|
||
|
||
#define COPYFG 0x00CA0749 /* dest = (pat & src) | (!pat & dst) */
|
||
#define COPYBG 0x00AC0744 /* dest = (!pat & src) | (pat & dst) */
|
||
|
||
/*
|
||
* Macros used later in the file.
|
||
*/
|
||
|
||
#define MIN(a,b) ((a>b) ? b : a)
|
||
#define MAX(a,b) ((a<b) ? b : a)
|
||
|
||
/*
|
||
* The followng typedef is used to pass Windows GDI drawing functions.
|
||
*/
|
||
|
||
typedef BOOL (CALLBACK *WinDrawFunc) _ANSI_ARGS_((HDC dc,
|
||
CONST POINT* points, int npoints));
|
||
|
||
/*
|
||
* Forward declarations for procedures defined in this file:
|
||
*/
|
||
|
||
static POINT * ConvertPoints _ANSI_ARGS_((XPoint *points, int npoints,
|
||
int mode, RECT *bbox));
|
||
static void DrawOrFillArc _ANSI_ARGS_((Display *display,
|
||
Drawable d, GC gc, int x, int y,
|
||
unsigned int width, unsigned int height,
|
||
int start, int extent, int fill));
|
||
static void RenderObject _ANSI_ARGS_((HDC dc, GC gc,
|
||
XPoint* points, int npoints, int mode, HPEN pen,
|
||
WinDrawFunc func));
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkWinGetDrawableDC --
|
||
*
|
||
* Retrieve the DC from a drawable.
|
||
*
|
||
* Results:
|
||
* Returns the window DC for windows. Returns a new memory DC
|
||
* for pixmaps.
|
||
*
|
||
* Side effects:
|
||
* Sets up the palette for the device context, and saves the old
|
||
* device context state in the passed in TkWinDCState structure.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
HDC
|
||
TkWinGetDrawableDC(display, d, state)
|
||
Display *display;
|
||
Drawable d;
|
||
TkWinDCState* state;
|
||
{
|
||
HDC dc;
|
||
TkWinDrawable *twdPtr = (TkWinDrawable *)d;
|
||
Colormap cmap;
|
||
|
||
if (twdPtr->type == TWD_WINDOW) {
|
||
TkWindow *winPtr = twdPtr->window.winPtr;
|
||
|
||
dc = GetDC(twdPtr->window.handle);
|
||
if (winPtr == NULL) {
|
||
cmap = DefaultColormap(display, DefaultScreen(display));
|
||
} else {
|
||
cmap = winPtr->atts.colormap;
|
||
}
|
||
} else if (twdPtr->type == TWD_WINDC) {
|
||
dc = twdPtr->winDC.hdc;
|
||
cmap = DefaultColormap(display, DefaultScreen(display));
|
||
} else {
|
||
dc = CreateCompatibleDC(NULL);
|
||
SelectObject(dc, twdPtr->bitmap.handle);
|
||
cmap = twdPtr->bitmap.colormap;
|
||
}
|
||
state->palette = TkWinSelectPalette(dc, cmap);
|
||
return dc;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkWinReleaseDrawableDC --
|
||
*
|
||
* Frees the resources associated with a drawable's DC.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Restores the old bitmap handle to the memory DC for pixmaps.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkWinReleaseDrawableDC(d, dc, state)
|
||
Drawable d;
|
||
HDC dc;
|
||
TkWinDCState *state;
|
||
{
|
||
TkWinDrawable *twdPtr = (TkWinDrawable *)d;
|
||
SelectPalette(dc, state->palette, TRUE);
|
||
RealizePalette(dc);
|
||
if (twdPtr->type == TWD_WINDOW) {
|
||
ReleaseDC(TkWinGetHWND(d), dc);
|
||
} else if (twdPtr->type == TWD_BITMAP) {
|
||
DeleteDC(dc);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ConvertPoints --
|
||
*
|
||
* Convert an array of X points to an array of Win32 points.
|
||
*
|
||
* Results:
|
||
* Returns the converted array of POINTs.
|
||
*
|
||
* Side effects:
|
||
* Allocates a block of memory that should not be freed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static POINT *
|
||
ConvertPoints(points, npoints, mode, bbox)
|
||
XPoint *points;
|
||
int npoints;
|
||
int mode; /* CoordModeOrigin or CoordModePrevious. */
|
||
RECT *bbox; /* Bounding box of points. */
|
||
{
|
||
static POINT *winPoints = NULL; /* Array of points that is reused. */
|
||
static int nWinPoints = -1; /* Current size of point array. */
|
||
int i;
|
||
|
||
/*
|
||
* To avoid paying the cost of a malloc on every drawing routine,
|
||
* we reuse the last array if it is large enough.
|
||
*/
|
||
|
||
if (npoints > nWinPoints) {
|
||
if (winPoints != NULL) {
|
||
ckfree((char *) winPoints);
|
||
}
|
||
winPoints = (POINT *) ckalloc(sizeof(POINT) * npoints);
|
||
if (winPoints == NULL) {
|
||
nWinPoints = -1;
|
||
return NULL;
|
||
}
|
||
nWinPoints = npoints;
|
||
}
|
||
|
||
bbox->left = bbox->right = points[0].x;
|
||
bbox->top = bbox->bottom = points[0].y;
|
||
|
||
if (mode == CoordModeOrigin) {
|
||
for (i = 0; i < npoints; i++) {
|
||
winPoints[i].x = points[i].x;
|
||
winPoints[i].y = points[i].y;
|
||
bbox->left = MIN(bbox->left, winPoints[i].x);
|
||
bbox->right = MAX(bbox->right, winPoints[i].x);
|
||
bbox->top = MIN(bbox->top, winPoints[i].y);
|
||
bbox->bottom = MAX(bbox->bottom, winPoints[i].y);
|
||
}
|
||
} else {
|
||
winPoints[0].x = points[0].x;
|
||
winPoints[0].y = points[0].y;
|
||
for (i = 1; i < npoints; i++) {
|
||
winPoints[i].x = winPoints[i-1].x + points[i].x;
|
||
winPoints[i].y = winPoints[i-1].y + points[i].y;
|
||
bbox->left = MIN(bbox->left, winPoints[i].x);
|
||
bbox->right = MAX(bbox->right, winPoints[i].x);
|
||
bbox->top = MIN(bbox->top, winPoints[i].y);
|
||
bbox->bottom = MAX(bbox->bottom, winPoints[i].y);
|
||
}
|
||
}
|
||
return winPoints;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XCopyArea --
|
||
*
|
||
* Copies data from one drawable to another using block transfer
|
||
* routines.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Data is moved from a window or bitmap to a second window or
|
||
* bitmap.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XCopyArea(display, src, dest, gc, src_x, src_y, width, height, dest_x, dest_y)
|
||
Display* display;
|
||
Drawable src;
|
||
Drawable dest;
|
||
GC gc;
|
||
int src_x, src_y;
|
||
unsigned int width, height;
|
||
int dest_x, dest_y;
|
||
{
|
||
HDC srcDC, destDC;
|
||
TkWinDCState srcState, destState;
|
||
TkpClipMask *clipPtr = (TkpClipMask*)gc->clip_mask;
|
||
|
||
srcDC = TkWinGetDrawableDC(display, src, &srcState);
|
||
|
||
if (src != dest) {
|
||
destDC = TkWinGetDrawableDC(display, dest, &destState);
|
||
} else {
|
||
destDC = srcDC;
|
||
}
|
||
|
||
if (clipPtr && clipPtr->type == TKP_CLIP_REGION) {
|
||
SelectClipRgn(destDC, (HRGN) clipPtr->value.region);
|
||
OffsetClipRgn(destDC, gc->clip_x_origin, gc->clip_y_origin);
|
||
}
|
||
|
||
BitBlt(destDC, dest_x, dest_y, width, height, srcDC, src_x, src_y,
|
||
bltModes[gc->function]);
|
||
|
||
SelectClipRgn(destDC, NULL);
|
||
|
||
if (src != dest) {
|
||
TkWinReleaseDrawableDC(dest, destDC, &destState);
|
||
}
|
||
TkWinReleaseDrawableDC(src, srcDC, &srcState);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XCopyPlane --
|
||
*
|
||
* Copies a bitmap from a source drawable to a destination
|
||
* drawable. The plane argument specifies which bit plane of
|
||
* the source contains the bitmap. Note that this implementation
|
||
* ignores the gc->function.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Changes the destination drawable.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XCopyPlane(display, src, dest, gc, src_x, src_y, width, height, dest_x,
|
||
dest_y, plane)
|
||
Display* display;
|
||
Drawable src;
|
||
Drawable dest;
|
||
GC gc;
|
||
int src_x, src_y;
|
||
unsigned int width, height;
|
||
int dest_x, dest_y;
|
||
unsigned long plane;
|
||
{
|
||
HDC srcDC, destDC;
|
||
TkWinDCState srcState, destState;
|
||
HBRUSH bgBrush, fgBrush, oldBrush;
|
||
TkpClipMask *clipPtr = (TkpClipMask*)gc->clip_mask;
|
||
|
||
display->request++;
|
||
|
||
if (plane != 1) {
|
||
panic("Unexpected plane specified for XCopyPlane");
|
||
}
|
||
|
||
srcDC = TkWinGetDrawableDC(display, src, &srcState);
|
||
|
||
if (src != dest) {
|
||
destDC = TkWinGetDrawableDC(display, dest, &destState);
|
||
} else {
|
||
destDC = srcDC;
|
||
}
|
||
|
||
if (clipPtr == NULL || clipPtr->type == TKP_CLIP_REGION) {
|
||
|
||
/*
|
||
* Case 1: opaque bitmaps. Windows handles the conversion
|
||
* from one bit to multiple bits by setting 0 to the
|
||
* foreground color, and 1 to the background color (seems
|
||
* backwards, but there you are).
|
||
*/
|
||
|
||
if (clipPtr && clipPtr->type == TKP_CLIP_REGION) {
|
||
SelectClipRgn(destDC, (HRGN) clipPtr->value.region);
|
||
OffsetClipRgn(destDC, gc->clip_x_origin, gc->clip_y_origin);
|
||
}
|
||
|
||
SetBkMode(destDC, OPAQUE);
|
||
SetBkColor(destDC, gc->foreground);
|
||
SetTextColor(destDC, gc->background);
|
||
BitBlt(destDC, dest_x, dest_y, width, height, srcDC, src_x, src_y,
|
||
SRCCOPY);
|
||
|
||
SelectClipRgn(destDC, NULL);
|
||
} else if (clipPtr->type == TKP_CLIP_PIXMAP) {
|
||
if (clipPtr->value.pixmap == src) {
|
||
|
||
/*
|
||
* Case 2: transparent bitmaps are handled by setting the
|
||
* destination to the foreground color whenever the source
|
||
* pixel is set.
|
||
*/
|
||
|
||
fgBrush = CreateSolidBrush(gc->foreground);
|
||
oldBrush = SelectObject(destDC, fgBrush);
|
||
BitBlt(destDC, dest_x, dest_y, width, height, srcDC, src_x, src_y,
|
||
MASKPAT);
|
||
SelectObject(destDC, oldBrush);
|
||
DeleteObject(fgBrush);
|
||
} else {
|
||
|
||
/*
|
||
* Case 3: two arbitrary bitmaps. Copy the source rectangle
|
||
* into a color pixmap. Use the result as a brush when
|
||
* copying the clip mask into the destination.
|
||
*/
|
||
|
||
HDC memDC, maskDC;
|
||
HBITMAP bitmap;
|
||
TkWinDCState maskState;
|
||
|
||
fgBrush = CreateSolidBrush(gc->foreground);
|
||
bgBrush = CreateSolidBrush(gc->background);
|
||
maskDC = TkWinGetDrawableDC(display, clipPtr->value.pixmap,
|
||
&maskState);
|
||
memDC = CreateCompatibleDC(destDC);
|
||
bitmap = CreateBitmap(width, height, 1, 1, NULL);
|
||
SelectObject(memDC, bitmap);
|
||
|
||
/*
|
||
* Set foreground bits. We create a new bitmap containing
|
||
* (source AND mask), then use it to set the foreground color
|
||
* into the destination.
|
||
*/
|
||
|
||
BitBlt(memDC, 0, 0, width, height, srcDC, src_x, src_y, SRCCOPY);
|
||
BitBlt(memDC, 0, 0, width, height, maskDC,
|
||
dest_x - gc->clip_x_origin, dest_y - gc->clip_y_origin,
|
||
SRCAND);
|
||
oldBrush = SelectObject(destDC, fgBrush);
|
||
BitBlt(destDC, dest_x, dest_y, width, height, memDC, 0, 0,
|
||
MASKPAT);
|
||
|
||
/*
|
||
* Set background bits. Same as foreground, except we use
|
||
* ((NOT source) AND mask) and the background brush.
|
||
*/
|
||
|
||
BitBlt(memDC, 0, 0, width, height, srcDC, src_x, src_y,
|
||
NOTSRCCOPY);
|
||
BitBlt(memDC, 0, 0, width, height, maskDC,
|
||
dest_x - gc->clip_x_origin, dest_y - gc->clip_y_origin,
|
||
SRCAND);
|
||
SelectObject(destDC, bgBrush);
|
||
BitBlt(destDC, dest_x, dest_y, width, height, memDC, 0, 0,
|
||
MASKPAT);
|
||
|
||
TkWinReleaseDrawableDC(clipPtr->value.pixmap, maskDC, &maskState);
|
||
SelectObject(destDC, oldBrush);
|
||
DeleteDC(memDC);
|
||
DeleteObject(bitmap);
|
||
DeleteObject(fgBrush);
|
||
DeleteObject(bgBrush);
|
||
}
|
||
}
|
||
if (src != dest) {
|
||
TkWinReleaseDrawableDC(dest, destDC, &destState);
|
||
}
|
||
TkWinReleaseDrawableDC(src, srcDC, &srcState);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkPutImage --
|
||
*
|
||
* Copies a subimage from an in-memory image to a rectangle of
|
||
* of the specified drawable.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Draws the image on the specified drawable.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkPutImage(colors, ncolors, display, d, gc, image, src_x, src_y, dest_x,
|
||
dest_y, width, height)
|
||
unsigned long *colors; /* Array of pixel values used by this
|
||
* image. May be NULL. */
|
||
int ncolors; /* Number of colors used, or 0. */
|
||
Display* display;
|
||
Drawable d; /* Destination drawable. */
|
||
GC gc;
|
||
XImage* image; /* Source image. */
|
||
int src_x, src_y; /* Offset of subimage. */
|
||
int dest_x, dest_y; /* Position of subimage origin in
|
||
* drawable. */
|
||
unsigned int width, height; /* Dimensions of subimage. */
|
||
{
|
||
HDC dc, dcMem;
|
||
TkWinDCState state;
|
||
BITMAPINFO *infoPtr;
|
||
HBITMAP bitmap;
|
||
char *data;
|
||
|
||
display->request++;
|
||
|
||
dc = TkWinGetDrawableDC(display, d, &state);
|
||
SetROP2(dc, tkpWinRopModes[gc->function]);
|
||
dcMem = CreateCompatibleDC(dc);
|
||
|
||
if (image->bits_per_pixel == 1) {
|
||
/*
|
||
* If the image isn't in the right format, we have to copy
|
||
* it into a new buffer in MSBFirst and word-aligned format.
|
||
*/
|
||
|
||
if ((image->bitmap_bit_order != MSBFirst)
|
||
|| (image->bitmap_pad != sizeof(WORD))) {
|
||
data = TkAlignImageData(image, sizeof(WORD), MSBFirst);
|
||
bitmap = CreateBitmap(image->width, image->height, 1, 1, data);
|
||
ckfree(data);
|
||
} else {
|
||
bitmap = CreateBitmap(image->width, image->height, 1, 1,
|
||
image->data);
|
||
}
|
||
SetTextColor(dc, gc->foreground);
|
||
SetBkColor(dc, gc->background);
|
||
} else {
|
||
int i, usePalette;
|
||
|
||
/*
|
||
* Do not use a palette for TrueColor images.
|
||
*/
|
||
|
||
usePalette = (image->bits_per_pixel < 16);
|
||
|
||
if (usePalette) {
|
||
infoPtr = (BITMAPINFO*) ckalloc(sizeof(BITMAPINFOHEADER)
|
||
+ sizeof(RGBQUAD)*ncolors);
|
||
} else {
|
||
infoPtr = (BITMAPINFO*) ckalloc(sizeof(BITMAPINFOHEADER));
|
||
}
|
||
|
||
infoPtr->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
|
||
infoPtr->bmiHeader.biWidth = image->width;
|
||
|
||
/*
|
||
* The following code works around a bug in Win32s. CreateDIBitmap
|
||
* fails under Win32s for top-down images. So we have to reverse the
|
||
* order of the scanlines. If we are not running under Win32s, we can
|
||
* just declare the image to be top-down.
|
||
*/
|
||
|
||
if (tkpIsWin32s) {
|
||
int y;
|
||
char *srcPtr, *dstPtr, *temp;
|
||
|
||
temp = ckalloc((unsigned) image->bytes_per_line);
|
||
srcPtr = image->data;
|
||
dstPtr = image->data+(image->bytes_per_line * (image->height - 1));
|
||
for (y = 0; y < (image->height/2); y++) {
|
||
memcpy(temp, srcPtr, image->bytes_per_line);
|
||
memcpy(srcPtr, dstPtr, image->bytes_per_line);
|
||
memcpy(dstPtr, temp, image->bytes_per_line);
|
||
srcPtr += image->bytes_per_line;
|
||
dstPtr -= image->bytes_per_line;
|
||
}
|
||
ckfree(temp);
|
||
infoPtr->bmiHeader.biHeight = image->height; /* Bottom-up order */
|
||
} else {
|
||
infoPtr->bmiHeader.biHeight = -image->height; /* Top-down order */
|
||
}
|
||
infoPtr->bmiHeader.biPlanes = 1;
|
||
infoPtr->bmiHeader.biBitCount = image->bits_per_pixel;
|
||
infoPtr->bmiHeader.biCompression = BI_RGB;
|
||
infoPtr->bmiHeader.biSizeImage = 0;
|
||
infoPtr->bmiHeader.biXPelsPerMeter = 0;
|
||
infoPtr->bmiHeader.biYPelsPerMeter = 0;
|
||
infoPtr->bmiHeader.biClrImportant = 0;
|
||
|
||
if (usePalette) {
|
||
infoPtr->bmiHeader.biClrUsed = ncolors;
|
||
for (i = 0; i < ncolors; i++) {
|
||
infoPtr->bmiColors[i].rgbBlue = GetBValue(colors[i]);
|
||
infoPtr->bmiColors[i].rgbGreen = GetGValue(colors[i]);
|
||
infoPtr->bmiColors[i].rgbRed = GetRValue(colors[i]);
|
||
infoPtr->bmiColors[i].rgbReserved = 0;
|
||
}
|
||
} else {
|
||
infoPtr->bmiHeader.biClrUsed = 0;
|
||
}
|
||
bitmap = CreateDIBitmap(dc, &infoPtr->bmiHeader, CBM_INIT,
|
||
image->data, infoPtr, DIB_RGB_COLORS);
|
||
ckfree((char *) infoPtr);
|
||
}
|
||
bitmap = SelectObject(dcMem, bitmap);
|
||
BitBlt(dc, dest_x, dest_y, width, height, dcMem, src_x, src_y, SRCCOPY);
|
||
DeleteObject(SelectObject(dcMem, bitmap));
|
||
DeleteDC(dcMem);
|
||
TkWinReleaseDrawableDC(d, dc, &state);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XFillRectangles --
|
||
*
|
||
* Fill multiple rectangular areas in the given drawable.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Draws onto the specified drawable.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XFillRectangles(display, d, gc, rectangles, nrectangles)
|
||
Display* display;
|
||
Drawable d;
|
||
GC gc;
|
||
XRectangle* rectangles;
|
||
int nrectangles;
|
||
{
|
||
HDC dc;
|
||
int i;
|
||
RECT rect;
|
||
TkWinDCState state;
|
||
HBRUSH brush;
|
||
|
||
if (d == None) {
|
||
return;
|
||
}
|
||
|
||
dc = TkWinGetDrawableDC(display, d, &state);
|
||
SetROP2(dc, tkpWinRopModes[gc->function]);
|
||
brush = CreateSolidBrush(gc->foreground);
|
||
|
||
if ((gc->fill_style == FillStippled
|
||
|| gc->fill_style == FillOpaqueStippled)
|
||
&& gc->stipple != None) {
|
||
TkWinDrawable *twdPtr = (TkWinDrawable *)gc->stipple;
|
||
HBRUSH oldBrush, stipple;
|
||
HBITMAP oldBitmap, bitmap;
|
||
HDC dcMem;
|
||
HBRUSH bgBrush = CreateSolidBrush(gc->background);
|
||
|
||
if (twdPtr->type != TWD_BITMAP) {
|
||
panic("unexpected drawable type in stipple");
|
||
}
|
||
|
||
/*
|
||
* Select stipple pattern into destination dc.
|
||
*/
|
||
|
||
stipple = CreatePatternBrush(twdPtr->bitmap.handle);
|
||
SetBrushOrgEx(dc, gc->ts_x_origin, gc->ts_y_origin, NULL);
|
||
oldBrush = SelectObject(dc, stipple);
|
||
dcMem = CreateCompatibleDC(dc);
|
||
|
||
/*
|
||
* For each rectangle, create a drawing surface which is the size of
|
||
* the rectangle and fill it with the background color. Then merge the
|
||
* result with the stipple pattern.
|
||
*/
|
||
|
||
for (i = 0; i < nrectangles; i++) {
|
||
bitmap = CreateCompatibleBitmap(dc, rectangles[i].width,
|
||
rectangles[i].height);
|
||
oldBitmap = SelectObject(dcMem, bitmap);
|
||
rect.left = 0;
|
||
rect.top = 0;
|
||
rect.right = rectangles[i].width;
|
||
rect.bottom = rectangles[i].height;
|
||
FillRect(dcMem, &rect, brush);
|
||
BitBlt(dc, rectangles[i].x, rectangles[i].y, rectangles[i].width,
|
||
rectangles[i].height, dcMem, 0, 0, COPYFG);
|
||
if (gc->fill_style == FillOpaqueStippled) {
|
||
FillRect(dcMem, &rect, bgBrush);
|
||
BitBlt(dc, rectangles[i].x, rectangles[i].y,
|
||
rectangles[i].width, rectangles[i].height, dcMem,
|
||
0, 0, COPYBG);
|
||
}
|
||
SelectObject(dcMem, oldBitmap);
|
||
DeleteObject(bitmap);
|
||
}
|
||
|
||
DeleteDC(dcMem);
|
||
SelectObject(dc, oldBrush);
|
||
DeleteObject(stipple);
|
||
DeleteObject(bgBrush);
|
||
} else {
|
||
for (i = 0; i < nrectangles; i++) {
|
||
TkWinFillRect(dc, rectangles[i].x, rectangles[i].y,
|
||
rectangles[i].width, rectangles[i].height, gc->foreground);
|
||
}
|
||
}
|
||
DeleteObject(brush);
|
||
TkWinReleaseDrawableDC(d, dc, &state);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* RenderObject --
|
||
*
|
||
* This function draws a shape using a list of points, a
|
||
* stipple pattern, and the specified drawing function.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
RenderObject(dc, gc, points, npoints, mode, pen, func)
|
||
HDC dc;
|
||
GC gc;
|
||
XPoint* points;
|
||
int npoints;
|
||
int mode;
|
||
HPEN pen;
|
||
WinDrawFunc func;
|
||
{
|
||
RECT rect;
|
||
HPEN oldPen;
|
||
HBRUSH oldBrush;
|
||
POINT *winPoints = ConvertPoints(points, npoints, mode, &rect);
|
||
|
||
if ((gc->fill_style == FillStippled
|
||
|| gc->fill_style == FillOpaqueStippled)
|
||
&& gc->stipple != None) {
|
||
|
||
TkWinDrawable *twdPtr = (TkWinDrawable *)gc->stipple;
|
||
HDC dcMem;
|
||
LONG width, height;
|
||
HBITMAP oldBitmap;
|
||
int i;
|
||
HBRUSH oldMemBrush;
|
||
|
||
if (twdPtr->type != TWD_BITMAP) {
|
||
panic("unexpected drawable type in stipple");
|
||
}
|
||
|
||
/*
|
||
* Grow the bounding box enough to account for wide lines.
|
||
*/
|
||
|
||
if (gc->line_width > 1) {
|
||
rect.left -= gc->line_width;
|
||
rect.top -= gc->line_width;
|
||
rect.right += gc->line_width;
|
||
rect.bottom += gc->line_width;
|
||
}
|
||
|
||
width = rect.right - rect.left;
|
||
height = rect.bottom - rect.top;
|
||
|
||
/*
|
||
* Select stipple pattern into destination dc.
|
||
*/
|
||
|
||
SetBrushOrgEx(dc, gc->ts_x_origin, gc->ts_y_origin, NULL);
|
||
oldBrush = SelectObject(dc, CreatePatternBrush(twdPtr->bitmap.handle));
|
||
|
||
/*
|
||
* Create temporary drawing surface containing a copy of the
|
||
* destination equal in size to the bounding box of the object.
|
||
*/
|
||
|
||
dcMem = CreateCompatibleDC(dc);
|
||
oldBitmap = SelectObject(dcMem, CreateCompatibleBitmap(dc, width,
|
||
height));
|
||
oldPen = SelectObject(dcMem, pen);
|
||
BitBlt(dcMem, 0, 0, width, height, dc, rect.left, rect.top, SRCCOPY);
|
||
|
||
/*
|
||
* Translate the object for rendering in the temporary drawing
|
||
* surface.
|
||
*/
|
||
|
||
for (i = 0; i < npoints; i++) {
|
||
winPoints[i].x -= rect.left;
|
||
winPoints[i].y -= rect.top;
|
||
}
|
||
|
||
/*
|
||
* Draw the object in the foreground color and copy it to the
|
||
* destination wherever the pattern is set.
|
||
*/
|
||
|
||
SetPolyFillMode(dcMem, (gc->fill_rule == EvenOddRule) ? ALTERNATE
|
||
: WINDING);
|
||
oldMemBrush = SelectObject(dcMem, CreateSolidBrush(gc->foreground));
|
||
(*func)(dcMem, winPoints, npoints);
|
||
BitBlt(dc, rect.left, rect.top, width, height, dcMem, 0, 0, COPYFG);
|
||
|
||
/*
|
||
* If we are rendering an opaque stipple, then draw the polygon in the
|
||
* background color and copy it to the destination wherever the pattern
|
||
* is clear.
|
||
*/
|
||
|
||
if (gc->fill_style == FillOpaqueStippled) {
|
||
DeleteObject(SelectObject(dcMem,
|
||
CreateSolidBrush(gc->background)));
|
||
(*func)(dcMem, winPoints, npoints);
|
||
BitBlt(dc, rect.left, rect.top, width, height, dcMem, 0, 0,
|
||
COPYBG);
|
||
}
|
||
|
||
SelectObject(dcMem, oldPen);
|
||
DeleteObject(SelectObject(dcMem, oldMemBrush));
|
||
DeleteObject(SelectObject(dcMem, oldBitmap));
|
||
DeleteDC(dcMem);
|
||
} else {
|
||
oldPen = SelectObject(dc, pen);
|
||
oldBrush = SelectObject(dc, CreateSolidBrush(gc->foreground));
|
||
SetROP2(dc, tkpWinRopModes[gc->function]);
|
||
|
||
SetPolyFillMode(dc, (gc->fill_rule == EvenOddRule) ? ALTERNATE
|
||
: WINDING);
|
||
|
||
(*func)(dc, winPoints, npoints);
|
||
|
||
SelectObject(dc, oldPen);
|
||
}
|
||
DeleteObject(SelectObject(dc, oldBrush));
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XDrawLines --
|
||
*
|
||
* Draw connected lines.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Renders a series of connected lines.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XDrawLines(display, d, gc, points, npoints, mode)
|
||
Display* display;
|
||
Drawable d;
|
||
GC gc;
|
||
XPoint* points;
|
||
int npoints;
|
||
int mode;
|
||
{
|
||
HPEN pen;
|
||
TkWinDCState state;
|
||
HDC dc;
|
||
|
||
if (d == None) {
|
||
return;
|
||
}
|
||
|
||
dc = TkWinGetDrawableDC(display, d, &state);
|
||
|
||
if (!tkpIsWin32s && (gc->line_width > 1)) {
|
||
LOGBRUSH lb;
|
||
DWORD style;
|
||
|
||
lb.lbStyle = BS_SOLID;
|
||
lb.lbColor = gc->foreground;
|
||
lb.lbHatch = 0;
|
||
|
||
style = PS_GEOMETRIC|PS_COSMETIC;
|
||
switch (gc->cap_style) {
|
||
case CapNotLast:
|
||
case CapButt:
|
||
style |= PS_ENDCAP_FLAT;
|
||
break;
|
||
case CapRound:
|
||
style |= PS_ENDCAP_ROUND;
|
||
break;
|
||
default:
|
||
style |= PS_ENDCAP_SQUARE;
|
||
break;
|
||
}
|
||
switch (gc->join_style) {
|
||
case JoinMiter:
|
||
style |= PS_JOIN_MITER;
|
||
break;
|
||
case JoinRound:
|
||
style |= PS_JOIN_ROUND;
|
||
break;
|
||
default:
|
||
style |= PS_JOIN_BEVEL;
|
||
break;
|
||
}
|
||
pen = ExtCreatePen(style, gc->line_width, &lb, 0, NULL);
|
||
} else {
|
||
pen = CreatePen(PS_SOLID, gc->line_width, gc->foreground);
|
||
}
|
||
RenderObject(dc, gc, points, npoints, mode, pen, Polyline);
|
||
DeleteObject(pen);
|
||
|
||
TkWinReleaseDrawableDC(d, dc, &state);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XFillPolygon --
|
||
*
|
||
* Draws a filled polygon.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Draws a filled polygon on the specified drawable.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XFillPolygon(display, d, gc, points, npoints, shape, mode)
|
||
Display* display;
|
||
Drawable d;
|
||
GC gc;
|
||
XPoint* points;
|
||
int npoints;
|
||
int shape;
|
||
int mode;
|
||
{
|
||
HPEN pen;
|
||
TkWinDCState state;
|
||
HDC dc;
|
||
|
||
if (d == None) {
|
||
return;
|
||
}
|
||
|
||
dc = TkWinGetDrawableDC(display, d, &state);
|
||
|
||
pen = GetStockObject(NULL_PEN);
|
||
RenderObject(dc, gc, points, npoints, mode, pen, Polygon);
|
||
|
||
TkWinReleaseDrawableDC(d, dc, &state);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XDrawRectangle --
|
||
*
|
||
* Draws a rectangle.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Draws a rectangle on the specified drawable.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XDrawRectangle(display, d, gc, x, y, width, height)
|
||
Display* display;
|
||
Drawable d;
|
||
GC gc;
|
||
int x;
|
||
int y;
|
||
unsigned int width;
|
||
unsigned int height;
|
||
{
|
||
HPEN pen, oldPen;
|
||
TkWinDCState state;
|
||
HBRUSH oldBrush;
|
||
HDC dc;
|
||
|
||
if (d == None) {
|
||
return;
|
||
}
|
||
|
||
dc = TkWinGetDrawableDC(display, d, &state);
|
||
|
||
pen = CreatePen(PS_SOLID, gc->line_width, gc->foreground);
|
||
oldPen = SelectObject(dc, pen);
|
||
oldBrush = SelectObject(dc, GetStockObject(NULL_BRUSH));
|
||
SetROP2(dc, tkpWinRopModes[gc->function]);
|
||
|
||
Rectangle(dc, x, y, x+width+1, y+height+1);
|
||
|
||
DeleteObject(SelectObject(dc, oldPen));
|
||
SelectObject(dc, oldBrush);
|
||
TkWinReleaseDrawableDC(d, dc, &state);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XDrawArc --
|
||
*
|
||
* Draw an arc.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Draws an arc on the specified drawable.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XDrawArc(display, d, gc, x, y, width, height, start, extent)
|
||
Display* display;
|
||
Drawable d;
|
||
GC gc;
|
||
int x;
|
||
int y;
|
||
unsigned int width;
|
||
unsigned int height;
|
||
int start;
|
||
int extent;
|
||
{
|
||
display->request++;
|
||
|
||
DrawOrFillArc(display, d, gc, x, y, width, height, start, extent, 0);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* XFillArc --
|
||
*
|
||
* Draw a filled arc.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Draws a filled arc on the specified drawable.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
XFillArc(display, d, gc, x, y, width, height, start, extent)
|
||
Display* display;
|
||
Drawable d;
|
||
GC gc;
|
||
int x;
|
||
int y;
|
||
unsigned int width;
|
||
unsigned int height;
|
||
int start;
|
||
int extent;
|
||
{
|
||
display->request++;
|
||
|
||
DrawOrFillArc(display, d, gc, x, y, width, height, start, extent, 1);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* DrawOrFillArc --
|
||
*
|
||
* This procedure handles the rendering of drawn or filled
|
||
* arcs and chords.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Renders the requested arc.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
DrawOrFillArc(display, d, gc, x, y, width, height, start, extent, fill)
|
||
Display *display;
|
||
Drawable d;
|
||
GC gc;
|
||
int x, y; /* left top */
|
||
unsigned int width, height;
|
||
int start; /* start: three-o'clock (deg*64) */
|
||
int extent; /* extent: relative (deg*64) */
|
||
int fill; /* ==0 draw, !=0 fill */
|
||
{
|
||
HDC dc;
|
||
HBRUSH brush, oldBrush;
|
||
HPEN pen, oldPen;
|
||
TkWinDCState state;
|
||
int clockwise = (extent < 0); /* non-zero if clockwise */
|
||
int xstart, ystart, xend, yend;
|
||
double radian_start, radian_end, xr, yr;
|
||
|
||
if (d == None) {
|
||
return;
|
||
}
|
||
|
||
dc = TkWinGetDrawableDC(display, d, &state);
|
||
|
||
SetROP2(dc, tkpWinRopModes[gc->function]);
|
||
|
||
/*
|
||
* Compute the absolute starting and ending angles in normalized radians.
|
||
* Swap the start and end if drawing clockwise.
|
||
*/
|
||
|
||
start = start % (64*360);
|
||
if (start < 0) {
|
||
start += (64*360);
|
||
}
|
||
extent = (start+extent) % (64*360);
|
||
if (extent < 0) {
|
||
extent += (64*360);
|
||
}
|
||
if (clockwise) {
|
||
int tmp = start;
|
||
start = extent;
|
||
extent = tmp;
|
||
}
|
||
radian_start = XAngleToRadians(start);
|
||
radian_end = XAngleToRadians(extent);
|
||
|
||
/*
|
||
* Now compute points on the radial lines that define the starting and
|
||
* ending angles. Be sure to take into account that the y-coordinate
|
||
* system is inverted.
|
||
*/
|
||
|
||
xr = x + width / 2.0;
|
||
yr = y + height / 2.0;
|
||
xstart = (int)((xr + cos(radian_start)*width/2.0) + 0.5);
|
||
ystart = (int)((yr + sin(-radian_start)*height/2.0) + 0.5);
|
||
xend = (int)((xr + cos(radian_end)*width/2.0) + 0.5);
|
||
yend = (int)((yr + sin(-radian_end)*height/2.0) + 0.5);
|
||
|
||
/*
|
||
* Now draw a filled or open figure. Note that we have to
|
||
* increase the size of the bounding box by one to account for the
|
||
* difference in pixel definitions between X and Windows.
|
||
*/
|
||
|
||
pen = CreatePen(PS_SOLID, gc->line_width, gc->foreground);
|
||
oldPen = SelectObject(dc, pen);
|
||
if (!fill) {
|
||
/*
|
||
* Note that this call will leave a gap of one pixel at the
|
||
* end of the arc for thin arcs. We can't use ArcTo because
|
||
* it's only supported under Windows NT.
|
||
*/
|
||
|
||
Arc(dc, x, y, x+width+1, y+height+1, xstart, ystart, xend, yend);
|
||
} else {
|
||
brush = CreateSolidBrush(gc->foreground);
|
||
oldBrush = SelectObject(dc, brush);
|
||
if (gc->arc_mode == ArcChord) {
|
||
Chord(dc, x, y, x+width+1, y+height+1, xstart, ystart, xend, yend);
|
||
} else if ( gc->arc_mode == ArcPieSlice ) {
|
||
Pie(dc, x, y, x+width+1, y+height+1, xstart, ystart, xend, yend);
|
||
}
|
||
DeleteObject(SelectObject(dc, oldBrush));
|
||
}
|
||
DeleteObject(SelectObject(dc, oldPen));
|
||
TkWinReleaseDrawableDC(d, dc, &state);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkScrollWindow --
|
||
*
|
||
* Scroll a rectangle of the specified window and accumulate
|
||
* a damage region.
|
||
*
|
||
* Results:
|
||
* Returns 0 if the scroll genereated no additional damage.
|
||
* Otherwise, sets the region that needs to be repainted after
|
||
* scrolling and returns 1.
|
||
*
|
||
* Side effects:
|
||
* Scrolls the bits in the window.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
TkScrollWindow(tkwin, gc, x, y, width, height, dx, dy, damageRgn)
|
||
Tk_Window tkwin; /* The window to be scrolled. */
|
||
GC gc; /* GC for window to be scrolled. */
|
||
int x, y, width, height; /* Position rectangle to be scrolled. */
|
||
int dx, dy; /* Distance rectangle should be moved. */
|
||
TkRegion damageRgn; /* Region to accumulate damage in. */
|
||
{
|
||
HWND hwnd = TkWinGetHWND(Tk_WindowId(tkwin));
|
||
RECT scrollRect;
|
||
|
||
scrollRect.left = x;
|
||
scrollRect.top = y;
|
||
scrollRect.right = x + width;
|
||
scrollRect.bottom = y + height;
|
||
return (ScrollWindowEx(hwnd, dx, dy, &scrollRect, NULL, (HRGN) damageRgn,
|
||
NULL, 0) == NULLREGION) ? 0 : 1;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkWinFillRect --
|
||
*
|
||
* This routine fills a rectangle with the foreground color
|
||
* from the specified GC ignoring all other GC values. This
|
||
* is the fastest way to fill a drawable with a solid color.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Modifies the contents of the DC drawing surface.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkWinFillRect(dc, x, y, width, height, pixel)
|
||
HDC dc;
|
||
int x, y, width, height;
|
||
int pixel;
|
||
{
|
||
RECT rect;
|
||
COLORREF oldColor;
|
||
|
||
rect.left = x;
|
||
rect.top = y;
|
||
rect.right = x + width;
|
||
rect.bottom = y + height;
|
||
oldColor = SetBkColor(dc, (COLORREF)pixel);
|
||
SetBkMode(dc, OPAQUE);
|
||
ExtTextOut(dc, 0, 0, ETO_OPAQUE, &rect, NULL, 0, NULL);
|
||
SetBkColor(dc, oldColor);
|
||
}
|