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Diffstat (limited to 'src/win32/cdwin.c')
-rw-r--r--src/win32/cdwin.c88
1 files changed, 50 insertions, 38 deletions
diff --git a/src/win32/cdwin.c b/src/win32/cdwin.c
index 313e833..da9bf9d 100644
--- a/src/win32/cdwin.c
+++ b/src/win32/cdwin.c
@@ -626,6 +626,7 @@ static int cdinteriorstyle (cdCtxCanvas* ctxcanvas, int style)
ctxcanvas->hBrush = CreateBrushIndirect(&ctxcanvas->logBrush);
ctxcanvas->hOldBrush = SelectObject(ctxcanvas->hDC, ctxcanvas->hBrush);
break;
+ /* the remaining styles must recreate the current brush */
case CD_HATCH:
cdhatch(ctxcanvas, ctxcanvas->canvas->hatch_style);
break;
@@ -963,8 +964,37 @@ static void cdtransform(cdCtxCanvas *ctxcanvas, const double* matrix)
else
{
ctxcanvas->canvas->invert_yaxis = 1;
- ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
- SetGraphicsMode(ctxcanvas->hDC, GM_COMPATIBLE);
+
+ if (ctxcanvas->rotate_angle)
+ {
+ XFORM xForm;
+
+ /* the rotation must be corrected because of the Y axis orientation */
+
+ SetGraphicsMode(ctxcanvas->hDC, GM_ADVANCED);
+ ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
+
+ xForm.eM11 = (FLOAT) cos(-CD_DEG2RAD*ctxcanvas->rotate_angle);
+ xForm.eM12 = (FLOAT) sin(-CD_DEG2RAD*ctxcanvas->rotate_angle);
+ xForm.eM21 = (FLOAT) -xForm.eM12;
+ xForm.eM22 = (FLOAT) xForm.eM11;
+ xForm.eDx = (FLOAT) ctxcanvas->rotate_center_x;
+ xForm.eDy = (FLOAT) _cdInvertYAxis(ctxcanvas->canvas, ctxcanvas->rotate_center_y);
+ ModifyWorldTransform(ctxcanvas->hDC, &xForm, MWT_LEFTMULTIPLY);
+
+ xForm.eM11 = (FLOAT) 1;
+ xForm.eM12 = (FLOAT) 0;
+ xForm.eM21 = (FLOAT) 0;
+ xForm.eM22 = (FLOAT) 1;
+ xForm.eDx = (FLOAT) -ctxcanvas->rotate_center_x;
+ xForm.eDy = (FLOAT) -_cdInvertYAxis(ctxcanvas->canvas, ctxcanvas->rotate_center_y);
+ ModifyWorldTransform(ctxcanvas->hDC, &xForm, MWT_LEFTMULTIPLY);
+ }
+ else
+ {
+ ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
+ SetGraphicsMode(ctxcanvas->hDC, GM_COMPATIBLE);
+ }
}
}
@@ -1581,11 +1611,12 @@ static void cdgetimagergb(cdCtxCanvas* ctxcanvas, unsigned char *red, unsigned c
if (GetGraphicsMode(ctxcanvas->hDC) == GM_ADVANCED)
{
+ /* reset to the identity. */
GetWorldTransform(ctxcanvas->hDC, &xForm);
ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
}
- if (ctxcanvas->canvas->invert_yaxis==0) // if 0, then the transform was reset
+ if (ctxcanvas->canvas->invert_yaxis==0) /* if 0, invert because the transform was reset here */
y = _cdInvertYAxis(ctxcanvas->canvas, y);
yr = y - (h - 1); /* y starts at the bottom of the image */
@@ -1891,20 +1922,21 @@ static cdCtxImage *cdcreateimage(cdCtxCanvas* ctxcanvas, int width, int height)
static void cdgetimage(cdCtxCanvas* ctxcanvas, cdCtxImage *ctximage, int x, int y)
{
- int yr;
XFORM xForm;
if (GetGraphicsMode(ctxcanvas->hDC) == GM_ADVANCED)
{
+ /* reset to the identity. */
GetWorldTransform(ctxcanvas->hDC, &xForm);
ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
}
- if (ctxcanvas->canvas->invert_yaxis==0) // if 0, then the transform was reset
+ if (ctxcanvas->canvas->invert_yaxis==0) /* if 0, invert because the transform was reset here */
y = _cdInvertYAxis(ctxcanvas->canvas, y);
- yr = y - (ctximage->h - 1);
- BitBlt(ctximage->hDC, 0, 0, ctximage->w, ctximage->h, ctxcanvas->hDC, x, yr, SRCCOPY);
+ /* y is the bottom-left of the image in CD, must be at upper-left */
+ y -= ctximage->h-1;
+ BitBlt(ctximage->hDC, 0, 0, ctximage->w, ctximage->h, ctxcanvas->hDC, x, y, SRCCOPY);
if (GetGraphicsMode(ctxcanvas->hDC) == GM_ADVANCED)
ModifyWorldTransform(ctxcanvas->hDC, &xForm, MWT_LEFTMULTIPLY);
@@ -1971,18 +2003,15 @@ static void cdscrollarea(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, i
{
XFORM xForm;
RECT rect;
- rect.left = xmin;
- rect.right = xmax+1;
- rect.top = ymin;
- rect.bottom = ymax+1;
if (GetGraphicsMode(ctxcanvas->hDC) == GM_ADVANCED)
{
+ /* reset to the identity. */
GetWorldTransform(ctxcanvas->hDC, &xForm);
ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
}
- if (ctxcanvas->canvas->invert_yaxis==0) // if 0, then the transform was reset
+ if (ctxcanvas->canvas->invert_yaxis==0) /* if 0, invert because the transform was reset here */
{
dy = -dy;
ymin = _cdInvertYAxis(ctxcanvas->canvas, ymin);
@@ -1990,6 +2019,11 @@ static void cdscrollarea(cdCtxCanvas* ctxcanvas, int xmin, int xmax, int ymin, i
_cdSwapInt(ymin, ymax);
}
+ rect.left = xmin;
+ rect.right = xmax+1;
+ rect.top = ymin;
+ rect.bottom = ymax+1;
+
ScrollDC(ctxcanvas->hDC, dx, dy, &rect, NULL, NULL, NULL);
if (GetGraphicsMode(ctxcanvas->hDC) == GM_ADVANCED)
@@ -2136,47 +2170,25 @@ static cdAttribute img_points_attrib =
static void set_rotate_attrib(cdCtxCanvas* ctxcanvas, char* data)
{
- /* ignore ROTATE if transform is set */
+ /* ignore ROTATE if transform is set,
+ because there is native support for transformations */
if (ctxcanvas->canvas->use_matrix)
return;
if (data)
{
- XFORM xForm;
sscanf(data, "%g %d %d", &ctxcanvas->rotate_angle,
&ctxcanvas->rotate_center_x,
&ctxcanvas->rotate_center_y);
-
- /* the rotation must be corrected because of the Y axis orientation */
-
- SetGraphicsMode(ctxcanvas->hDC, GM_ADVANCED);
- ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
-
- xForm.eM11 = (FLOAT) cos(-CD_DEG2RAD*ctxcanvas->rotate_angle);
- xForm.eM12 = (FLOAT) sin(-CD_DEG2RAD*ctxcanvas->rotate_angle);
- xForm.eM21 = (FLOAT) -xForm.eM12;
- xForm.eM22 = (FLOAT) xForm.eM11;
- xForm.eDx = (FLOAT) ctxcanvas->rotate_center_x;
- xForm.eDy = (FLOAT) _cdInvertYAxis(ctxcanvas->canvas, ctxcanvas->rotate_center_y);
- ModifyWorldTransform(ctxcanvas->hDC, &xForm, MWT_LEFTMULTIPLY);
-
- xForm.eM11 = (FLOAT) 1;
- xForm.eM12 = (FLOAT) 0;
- xForm.eM21 = (FLOAT) 0;
- xForm.eM22 = (FLOAT) 1;
- xForm.eDx = (FLOAT) -ctxcanvas->rotate_center_x;
- xForm.eDy = (FLOAT) -_cdInvertYAxis(ctxcanvas->canvas, ctxcanvas->rotate_center_y);
- ModifyWorldTransform(ctxcanvas->hDC, &xForm, MWT_LEFTMULTIPLY);
}
else
{
ctxcanvas->rotate_angle = 0;
ctxcanvas->rotate_center_x = 0;
ctxcanvas->rotate_center_y = 0;
-
- ModifyWorldTransform(ctxcanvas->hDC, NULL, MWT_IDENTITY);
- SetGraphicsMode(ctxcanvas->hDC, GM_COMPATIBLE);
}
+
+ cdtransform(ctxcanvas, NULL);
}
static char* get_rotate_attrib(cdCtxCanvas* ctxcanvas)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 01:06:49 +0000