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-rw-r--r--frontends/windows/plot.c868
1 files changed, 868 insertions, 0 deletions
diff --git a/frontends/windows/plot.c b/frontends/windows/plot.c
new file mode 100644
index 000000000..86870ea4e
--- /dev/null
+++ b/frontends/windows/plot.c
@@ -0,0 +1,868 @@
+/*
+ * Copyright 2008 Vincent Sanders <vince@simtec.co.uk>
+ * Copyright 2009 Mark Benjamin <netsurf-browser.org.MarkBenjamin@dfgh.net>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "utils/config.h"
+#include <sys/types.h>
+#include <stdint.h>
+#include <string.h>
+#include <limits.h>
+#include <math.h>
+#include <windows.h>
+
+#include "utils/log.h"
+#include "utils/utf8.h"
+#include "utils/utils.h"
+#include "desktop/mouse.h"
+#include "desktop/gui_window.h"
+#include "desktop/plotters.h"
+
+#include "windows/bitmap.h"
+#include "windows/font.h"
+#include "windows/gui.h"
+#include "windows/plot.h"
+
+
+/* set NSWS_PLOT_DEBUG to 0 for no debugging, 1 for debugging */
+/* #define NSWS_PLOT_DEBUG */
+
+#ifdef NSWS_PLOT_DEBUG
+#define PLOT_LOG(x...) LOG(x)
+#else
+#define PLOT_LOG(x...) ((void) 0)
+#endif
+
+HDC plot_hdc;
+
+static RECT plot_clip; /* currently set clipping rectangle */
+
+static bool clip(const struct rect *clip)
+{
+ PLOT_LOG("clip %d,%d to %d,%d", clip->x0, clip->y0, clip->x1, clip->y1);
+
+ plot_clip.left = clip->x0;
+ plot_clip.top = clip->y0;
+ plot_clip.right = clip->x1 + 1; /* co-ordinates are exclusive */
+ plot_clip.bottom = clip->y1 + 1; /* co-ordinates are exclusive */
+
+ return true;
+}
+
+static bool line(int x0, int y0, int x1, int y1, const plot_style_t *style)
+{
+ PLOT_LOG("from %d,%d to %d,%d", x0, y0, x1, y1);
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ HRGN clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ COLORREF col = (DWORD)(style->stroke_colour & 0x00FFFFFF);
+ /* windows 0x00bbggrr */
+ DWORD penstyle = PS_GEOMETRIC | ((style->stroke_type ==
+ PLOT_OP_TYPE_DOT) ? PS_DOT :
+ (style->stroke_type == PLOT_OP_TYPE_DASH) ? PS_DASH:
+ 0);
+ LOGBRUSH lb = {BS_SOLID, col, 0};
+ HPEN pen = ExtCreatePen(penstyle, style->stroke_width, &lb, 0, NULL);
+ if (pen == NULL) {
+ DeleteObject(clipregion);
+ return false;
+ }
+ HGDIOBJ bak = SelectObject(plot_hdc, (HGDIOBJ) pen);
+ if (bak == NULL) {
+ DeleteObject(pen);
+ DeleteObject(clipregion);
+ return false;
+ }
+/*
+ RECT r;
+ r.left = x0;
+ r.top = y0;
+ r.right = x1;
+ r.bottom = y1;
+*/
+ SelectClipRgn(plot_hdc, clipregion);
+
+ MoveToEx(plot_hdc, x0, y0, (LPPOINT) NULL);
+
+ LineTo(plot_hdc, x1, y1);
+
+ SelectClipRgn(plot_hdc, NULL);
+ pen = SelectObject(plot_hdc, bak);
+
+ DeleteObject(pen);
+ DeleteObject(clipregion);
+
+ return true;
+}
+
+static bool rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style)
+{
+ PLOT_LOG("rectangle from %d,%d to %d,%d", x0, y0, x1, y1);
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ HRGN clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ x1++;
+ y1++;
+
+ COLORREF pencol = (DWORD)(style->stroke_colour & 0x00FFFFFF);
+ DWORD penstyle = PS_GEOMETRIC |
+ (style->stroke_type == PLOT_OP_TYPE_DOT ? PS_DOT :
+ (style->stroke_type == PLOT_OP_TYPE_DASH ? PS_DASH :
+ (style->stroke_type == PLOT_OP_TYPE_NONE ? PS_NULL :
+ 0)));
+ LOGBRUSH lb = {BS_SOLID, pencol, 0};
+ LOGBRUSH lb1 = {BS_SOLID, style->fill_colour, 0};
+ if (style->fill_type == PLOT_OP_TYPE_NONE)
+ lb1.lbStyle = BS_HOLLOW;
+
+ HPEN pen = ExtCreatePen(penstyle, style->stroke_width, &lb, 0, NULL);
+ if (pen == NULL) {
+ return false;
+ }
+ HGDIOBJ penbak = SelectObject(plot_hdc, (HGDIOBJ) pen);
+ if (penbak == NULL) {
+ DeleteObject(pen);
+ return false;
+ }
+ HBRUSH brush = CreateBrushIndirect(&lb1);
+ if (brush == NULL) {
+ SelectObject(plot_hdc, penbak);
+ DeleteObject(pen);
+ return false;
+ }
+ HGDIOBJ brushbak = SelectObject(plot_hdc, (HGDIOBJ) brush);
+ if (brushbak == NULL) {
+ SelectObject(plot_hdc, penbak);
+ DeleteObject(pen);
+ DeleteObject(brush);
+ return false;
+ }
+
+ SelectClipRgn(plot_hdc, clipregion);
+
+ Rectangle(plot_hdc, x0, y0, x1, y1);
+
+ pen = SelectObject(plot_hdc, penbak);
+ brush = SelectObject(plot_hdc, brushbak);
+ SelectClipRgn(plot_hdc, NULL);
+ DeleteObject(pen);
+ DeleteObject(brush);
+ DeleteObject(clipregion);
+
+ return true;
+}
+
+
+static bool polygon(const int *p, unsigned int n, const plot_style_t *style)
+{
+ PLOT_LOG("polygon %d points", n);
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ POINT points[n];
+ unsigned int i;
+ HRGN clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ COLORREF pencol = (DWORD)(style->fill_colour & 0x00FFFFFF);
+ COLORREF brushcol = (DWORD)(style->fill_colour & 0x00FFFFFF);
+ HPEN pen = CreatePen(PS_GEOMETRIC | PS_NULL, 1, pencol);
+ if (pen == NULL) {
+ DeleteObject(clipregion);
+ return false;
+ }
+ HPEN penbak = SelectObject(plot_hdc, pen);
+ if (penbak == NULL) {
+ DeleteObject(clipregion);
+ DeleteObject(pen);
+ return false;
+ }
+ HBRUSH brush = CreateSolidBrush(brushcol);
+ if (brush == NULL) {
+ DeleteObject(clipregion);
+ SelectObject(plot_hdc, penbak);
+ DeleteObject(pen);
+ return false;
+ }
+ HBRUSH brushbak = SelectObject(plot_hdc, brush);
+ if (brushbak == NULL) {
+ DeleteObject(clipregion);
+ SelectObject(plot_hdc, penbak);
+ DeleteObject(pen);
+ DeleteObject(brush);
+ return false;
+ }
+ SetPolyFillMode(plot_hdc, WINDING);
+ for (i = 0; i < n; i++) {
+ points[i].x = (long) p[2 * i];
+ points[i].y = (long) p[2 * i + 1];
+
+ PLOT_LOG("%ld,%ld ", points[i].x, points[i].y);
+ }
+
+ SelectClipRgn(plot_hdc, clipregion);
+
+ if (n >= 2)
+ Polygon(plot_hdc, points, n);
+
+ SelectClipRgn(plot_hdc, NULL);
+
+ pen = SelectObject(plot_hdc, penbak);
+ brush = SelectObject(plot_hdc, brushbak);
+ DeleteObject(clipregion);
+ DeleteObject(pen);
+ DeleteObject(brush);
+
+ return true;
+}
+
+
+static bool text(int x, int y, const char *text, size_t length,
+ const plot_font_style_t *style)
+{
+ PLOT_LOG("words %s at %d,%d", text, x, y);
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ HRGN clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ HFONT fontbak, font = get_font(style);
+ if (font == NULL) {
+ DeleteObject(clipregion);
+ return false;
+ }
+ int wlen;
+ SIZE s;
+ LPWSTR wstring;
+ fontbak = (HFONT) SelectObject(plot_hdc, font);
+ GetTextExtentPoint(plot_hdc, text, length, &s);
+
+/*
+ RECT r;
+ r.left = x;
+ r.top = y - (3 * s.cy) / 4;
+ r.right = x + s.cx;
+ r.bottom = y + s.cy / 4;
+*/
+ SelectClipRgn(plot_hdc, clipregion);
+
+ SetTextAlign(plot_hdc, TA_BASELINE | TA_LEFT);
+ if ((style->background & 0xFF000000) != 0x01000000)
+ /* 100% alpha */
+ SetBkColor(plot_hdc, (DWORD) (style->background & 0x00FFFFFF));
+ SetBkMode(plot_hdc, TRANSPARENT);
+ SetTextColor(plot_hdc, (DWORD) (style->foreground & 0x00FFFFFF));
+
+ wlen = MultiByteToWideChar(CP_UTF8, 0, text, length, NULL, 0);
+ wstring = malloc(2 * (wlen + 1));
+ if (wstring == NULL) {
+ return false;
+ }
+ MultiByteToWideChar(CP_UTF8, 0, text, length, wstring, wlen);
+ TextOutW(plot_hdc, x, y, wstring, wlen);
+
+ SelectClipRgn(plot_hdc, NULL);
+ free(wstring);
+ font = SelectObject(plot_hdc, fontbak);
+ DeleteObject(clipregion);
+ DeleteObject(font);
+
+ return true;
+}
+
+static bool disc(int x, int y, int radius, const plot_style_t *style)
+{
+ PLOT_LOG("disc at %d,%d radius %d", x, y, radius);
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ HRGN clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ COLORREF col = (DWORD)((style->fill_colour | style->stroke_colour)
+ & 0x00FFFFFF);
+ HPEN pen = CreatePen(PS_GEOMETRIC | PS_SOLID, 1, col);
+ if (pen == NULL) {
+ DeleteObject(clipregion);
+ return false;
+ }
+ HGDIOBJ penbak = SelectObject(plot_hdc, (HGDIOBJ) pen);
+ if (penbak == NULL) {
+ DeleteObject(clipregion);
+ DeleteObject(pen);
+ return false;
+ }
+ HBRUSH brush = CreateSolidBrush(col);
+ if (brush == NULL) {
+ DeleteObject(clipregion);
+ SelectObject(plot_hdc, penbak);
+ DeleteObject(pen);
+ return false;
+ }
+ HGDIOBJ brushbak = SelectObject(plot_hdc, (HGDIOBJ) brush);
+ if (brushbak == NULL) {
+ DeleteObject(clipregion);
+ SelectObject(plot_hdc, penbak);
+ DeleteObject(pen);
+ DeleteObject(brush);
+ return false;
+ }
+/*
+ RECT r;
+ r.left = x - radius;
+ r.top = y - radius;
+ r.right = x + radius;
+ r.bottom = y + radius;
+*/
+ SelectClipRgn(plot_hdc, clipregion);
+
+ if (style->fill_type == PLOT_OP_TYPE_NONE)
+ Arc(plot_hdc, x - radius, y - radius, x + radius, y + radius,
+ x - radius, y - radius,
+ x - radius, y - radius);
+ else
+ Ellipse(plot_hdc, x - radius, y - radius, x + radius, y + radius);
+
+ SelectClipRgn(plot_hdc, NULL);
+ pen = SelectObject(plot_hdc, penbak);
+ brush = SelectObject(plot_hdc, brushbak);
+ DeleteObject(clipregion);
+ DeleteObject(pen);
+ DeleteObject(brush);
+
+ return true;
+}
+
+static bool arc(int x, int y, int radius, int angle1, int angle2,
+ const plot_style_t *style)
+{
+ PLOT_LOG("arc centre %d,%d radius %d from %d to %d", x, y, radius,
+ angle1, angle2);
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ HRGN clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ COLORREF col = (DWORD)(style->stroke_colour & 0x00FFFFFF);
+ HPEN pen = CreatePen(PS_GEOMETRIC | PS_SOLID, 1, col);
+ if (pen == NULL) {
+ DeleteObject(clipregion);
+ return false;
+ }
+ HGDIOBJ penbak = SelectObject(plot_hdc, (HGDIOBJ) pen);
+ if (penbak == NULL) {
+ DeleteObject(clipregion);
+ DeleteObject(pen);
+ return false;
+ }
+
+ int q1, q2;
+ double a1=1.0, a2=1.0, b1=1.0, b2=1.0;
+ q1 = (int) ((angle1 + 45) / 90) - 45;
+ q2 = (int) ((angle2 + 45) / 90) - 45;
+ while (q1 > 4)
+ q1 -= 4;
+ while (q2 > 4)
+ q2 -= 4;
+ while (q1 <= 0)
+ q1 += 4;
+ while (q2 <= 0)
+ q2 += 4;
+ angle1 = ((angle1 + 45) % 90) - 45;
+ angle2 = ((angle2 + 45) % 90) - 45;
+
+ switch(q1) {
+ case 1:
+ a1 = 1.0;
+ b1 = -tan((M_PI / 180) * angle1);
+ break;
+ case 2:
+ b1 = -1.0;
+ a1 = -tan((M_PI / 180) * angle1);
+ break;
+ case 3:
+ a1 = -1.0;
+ b1 = tan((M_PI / 180) * angle1);
+ break;
+ case 4:
+ b1 = 1.0;
+ a1 = tan((M_PI / 180) * angle1);
+ break;
+ }
+
+ switch(q2) {
+ case 1:
+ a2 = 1.0;
+ b2 = -tan((M_PI / 180) * angle2);
+ break;
+ case 2:
+ b2 = -1.0;
+ a2 = -tan((M_PI / 180) * angle2);
+ break;
+ case 3:
+ a2 = -1.0;
+ b2 = tan((M_PI / 180) * angle2);
+ break;
+ case 4:
+ b2 = 1.0;
+ a2 = tan((M_PI / 180) * angle2);
+ break;
+ }
+
+/*
+ RECT r;
+ r.left = x - radius;
+ r.top = y - radius;
+ r.right = x + radius;
+ r.bottom = y + radius;
+*/
+ SelectClipRgn(plot_hdc, clipregion);
+
+ Arc(plot_hdc, x - radius, y - radius, x + radius, y + radius,
+ x + (int)(a1 * radius), y + (int)(b1 * radius),
+ x + (int)(a2 * radius), y + (int)(b2 * radius));
+
+ SelectClipRgn(plot_hdc, NULL);
+ pen = SelectObject(plot_hdc, penbak);
+ DeleteObject(clipregion);
+ DeleteObject(pen);
+
+ return true;
+}
+
+static bool
+plot_block(COLORREF col, int x, int y, int width, int height)
+{
+ HRGN clipregion;
+ HGDIOBJ original = NULL;
+
+ /* Bail early if we can */
+ if ((x >= plot_clip.right) ||
+ ((x + width) < plot_clip.left) ||
+ (y >= plot_clip.bottom) ||
+ ((y + height) < plot_clip.top)) {
+ /* Image completely outside clip region */
+ return true;
+ }
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ SelectClipRgn(plot_hdc, clipregion);
+
+ /* Saving the original pen object */
+ original = SelectObject(plot_hdc,GetStockObject(DC_PEN));
+
+ SelectObject(plot_hdc, GetStockObject(DC_PEN));
+ SelectObject(plot_hdc, GetStockObject(DC_BRUSH));
+ SetDCPenColor(plot_hdc, col);
+ SetDCBrushColor(plot_hdc, col);
+ Rectangle(plot_hdc, x, y, width, height);
+
+ SelectObject(plot_hdc,original); /* Restoring the original pen object */
+
+ DeleteObject(clipregion);
+
+ return true;
+
+}
+
+/* blunt force truma way of achiving alpha blended plotting */
+static bool
+plot_alpha_bitmap(HDC hdc,
+ struct bitmap *bitmap,
+ int x, int y,
+ int width, int height)
+{
+#ifdef WINDOWS_GDI_ALPHA_WORKED
+ BLENDFUNCTION blnd = { AC_SRC_OVER, 0, 0xff, AC_SRC_ALPHA };
+ HDC bmihdc;
+ bool bltres;
+ bmihdc = CreateCompatibleDC(hdc);
+ SelectObject(bmihdc, bitmap->windib);
+ bltres = AlphaBlend(hdc,
+ x, y,
+ width, height,
+ bmihdc,
+ 0, 0,
+ bitmap->width, bitmap->height,
+ blnd);
+ DeleteDC(bmihdc);
+ return bltres;
+#else
+ HDC Memhdc;
+ BITMAPINFOHEADER bmih;
+ int v, vv, vi, h, hh, width4, transparency;
+ unsigned char alpha;
+ bool isscaled = false; /* set if the scaled bitmap requires freeing */
+ BITMAP MemBM;
+ BITMAPINFO *bmi;
+ HBITMAP MemBMh;
+
+ PLOT_LOG("%p bitmap %d,%d width %d height %d", bitmap, x, y, width, height);
+ PLOT_LOG("clipped %ld,%ld to %ld,%ld",plot_clip.left, plot_clip.top, plot_clip.right, plot_clip.bottom);
+
+ Memhdc = CreateCompatibleDC(hdc);
+ if (Memhdc == NULL) {
+ return false;
+ }
+
+ if ((bitmap->width != width) ||
+ (bitmap->height != height)) {
+ PLOT_LOG("scaling from %d,%d to %d,%d",
+ bitmap->width, bitmap->height, width, height);
+ bitmap = bitmap_scale(bitmap, width, height);
+ if (bitmap == NULL)
+ return false;
+ isscaled = true;
+ }
+
+ bmi = (BITMAPINFO *) malloc(sizeof(BITMAPINFOHEADER) +
+ (bitmap->width * bitmap->height * 4));
+ if (bmi == NULL) {
+ DeleteDC(Memhdc);
+ return false;
+ }
+
+ MemBMh = CreateCompatibleBitmap(hdc, bitmap->width, bitmap->height);
+ if (MemBMh == NULL){
+ free(bmi);
+ DeleteDC(Memhdc);
+ return false;
+ }
+
+ /* save 'background' data for alpha channel work */
+ SelectObject(Memhdc, MemBMh);
+ BitBlt(Memhdc, 0, 0, bitmap->width, bitmap->height, hdc, x, y, SRCCOPY);
+ GetObject(MemBMh, sizeof(BITMAP), &MemBM);
+
+ bmih.biSize = sizeof(bmih);
+ bmih.biWidth = bitmap->width;
+ bmih.biHeight = bitmap->height;
+ bmih.biPlanes = 1;
+ bmih.biBitCount = 32;
+ bmih.biCompression = BI_RGB;
+ bmih.biSizeImage = 4 * bitmap->height * bitmap->width;
+ bmih.biXPelsPerMeter = 3600; /* 100 dpi */
+ bmih.biYPelsPerMeter = 3600;
+ bmih.biClrUsed = 0;
+ bmih.biClrImportant = 0;
+ bmi->bmiHeader = bmih;
+
+ GetDIBits(hdc, MemBMh, 0, bitmap->height, bmi->bmiColors, bmi,
+ DIB_RGB_COLORS);
+
+ /* then load 'foreground' bits from bitmap->pixdata */
+
+ width4 = bitmap->width * 4;
+ for (v = 0, vv = 0, vi = (bitmap->height - 1) * width4;
+ v < bitmap->height;
+ v++, vv += bitmap->width, vi -= width4) {
+ for (h = 0, hh = 0; h < bitmap->width; h++, hh += 4) {
+ alpha = bitmap->pixdata[vi + hh + 3];
+/* multiplication of alpha value; subject to profiling could be optional */
+ if (alpha == 0xFF) {
+ bmi->bmiColors[vv + h].rgbBlue =
+ bitmap->pixdata[vi + hh + 2];
+ bmi->bmiColors[vv + h].rgbGreen =
+ bitmap->pixdata[vi + hh + 1];
+ bmi->bmiColors[vv + h].rgbRed =
+ bitmap->pixdata[vi + hh];
+ } else if (alpha > 0) {
+ transparency = 0x100 - alpha;
+ bmi->bmiColors[vv + h].rgbBlue =
+ (bmi->bmiColors[vv + h].rgbBlue
+ * transparency +
+ (bitmap->pixdata[vi + hh + 2]) *
+ alpha) >> 8;
+ bmi->bmiColors[vv + h].rgbGreen =
+ (bmi->bmiColors[vv + h].
+ rgbGreen
+ * transparency +
+ (bitmap->pixdata[vi + hh + 1]) *
+ alpha) >> 8;
+ bmi->bmiColors[vv + h].rgbRed =
+ (bmi->bmiColors[vv + h].rgbRed
+ * transparency +
+ bitmap->pixdata[vi + hh]
+ * alpha) >> 8;
+ }
+ }
+ }
+ SetDIBitsToDevice(hdc, x, y, bitmap->width, bitmap->height,
+ 0, 0, 0, bitmap->height,
+ (const void *) bmi->bmiColors,
+ bmi, DIB_RGB_COLORS);
+
+ if (isscaled && bitmap && bitmap->pixdata) {
+ free(bitmap->pixdata);
+ free(bitmap);
+ }
+
+ free(bmi);
+ DeleteObject(MemBMh);
+ DeleteDC(Memhdc);
+ return true;
+#endif
+}
+
+
+static bool
+plot_bitmap(struct bitmap *bitmap, int x, int y, int width, int height)
+{
+ int bltres;
+ HRGN clipregion;
+
+ /* Bail early if we can */
+ if ((x >= plot_clip.right) ||
+ ((x + width) < plot_clip.left) ||
+ (y >= plot_clip.bottom) ||
+ ((y + height) < plot_clip.top)) {
+ /* Image completely outside clip region */
+ return true;
+ }
+
+ /* ensure the plot HDC is set */
+ if (plot_hdc == NULL) {
+ LOG("HDC not set on call to plotters");
+ return false;
+ }
+
+ clipregion = CreateRectRgnIndirect(&plot_clip);
+ if (clipregion == NULL) {
+ return false;
+ }
+
+ SelectClipRgn(plot_hdc, clipregion);
+
+ if (bitmap->opaque) {
+ /* opaque bitmap */
+ if ((bitmap->width == width) &&
+ (bitmap->height == height)) {
+ /* unscaled */
+ bltres = SetDIBitsToDevice(plot_hdc,
+ x, y,
+ width, height,
+ 0, 0,
+ 0,
+ height,
+ bitmap->pixdata,
+ (BITMAPINFO *)bitmap->pbmi,
+ DIB_RGB_COLORS);
+ } else {
+ /* scaled */
+ SetStretchBltMode(plot_hdc, COLORONCOLOR);
+ bltres = StretchDIBits(plot_hdc,
+ x, y,
+ width, height,
+ 0, 0,
+ bitmap->width, bitmap->height,
+ bitmap->pixdata,
+ (BITMAPINFO *)bitmap->pbmi,
+ DIB_RGB_COLORS,
+ SRCCOPY);
+
+
+ }
+ } else {
+ /* Bitmap with alpha.*/
+ bltres = plot_alpha_bitmap(plot_hdc, bitmap, x, y, width, height);
+ }
+
+ PLOT_LOG("bltres = %d", bltres);
+
+ DeleteObject(clipregion);
+
+ return true;
+
+}
+
+static bool
+windows_plot_bitmap(int x, int y,
+ int width, int height,
+ struct bitmap *bitmap, colour bg,
+ bitmap_flags_t flags)
+{
+ int xf,yf;
+ bool repeat_x = (flags & BITMAPF_REPEAT_X);
+ bool repeat_y = (flags & BITMAPF_REPEAT_Y);
+
+ /* Bail early if we can */
+
+ PLOT_LOG("Plotting %p at %d,%d by %d,%d",bitmap, x,y,width,height);
+
+ if (bitmap == NULL) {
+ LOG("Passed null bitmap!");
+ return true;
+ }
+
+ /* check if nothing to plot */
+ if (width == 0 || height == 0)
+ return true;
+
+ /* x and y define coordinate of top left of of the initial explicitly
+ * placed tile. The width and height are the image scaling and the
+ * bounding box defines the extent of the repeat (which may go in all
+ * four directions from the initial tile).
+ */
+
+ if (!(repeat_x || repeat_y)) {
+ /* Not repeating at all, so just plot it */
+ if ((bitmap->width == 1) && (bitmap->height == 1)) {
+ if ((*(bitmap->pixdata + 3) & 0xff) == 0) {
+ return true;
+ }
+ return plot_block((*(COLORREF *)bitmap->pixdata) & 0xffffff, x, y, x + width, y + height);
+
+ } else {
+ return plot_bitmap(bitmap, x, y, width, height);
+ }
+ }
+
+ /* Optimise tiled plots of 1x1 bitmaps by replacing with a flat fill
+ * of the area. Can only be done when image is fully opaque. */
+ if ((bitmap->width == 1) && (bitmap->height == 1)) {
+ if ((*(COLORREF *)bitmap->pixdata & 0xff000000) != 0) {
+ return plot_block((*(COLORREF *)bitmap->pixdata) & 0xffffff,
+ plot_clip.left,
+ plot_clip.top,
+ plot_clip.right,
+ plot_clip.bottom);
+ }
+ }
+
+ /* Optimise tiled plots of bitmaps scaled to 1x1 by replacing with
+ * a flat fill of the area. Can only be done when image is fully
+ * opaque. */
+ if ((width == 1) && (height == 1)) {
+ if (bitmap->opaque) {
+ /** TODO: Currently using top left pixel. Maybe centre
+ * pixel or average value would be better. */
+ return plot_block((*(COLORREF *)bitmap->pixdata) & 0xffffff,
+ plot_clip.left,
+ plot_clip.top,
+ plot_clip.right,
+ plot_clip.bottom);
+ }
+ }
+
+ PLOT_LOG("Tiled plotting %d,%d by %d,%d",x,y,width,height);
+ PLOT_LOG("clipped %ld,%ld to %ld,%ld",plot_clip.left, plot_clip.top, plot_clip.right, plot_clip.bottom);
+
+ /* get left most tile position */
+ if (repeat_x)
+ for (; x > plot_clip.left; x -= width);
+
+ /* get top most tile position */
+ if (repeat_y)
+ for (; y > plot_clip.top; y -= height);
+
+ PLOT_LOG("repeat from %d,%d to %ld,%ld", x, y, plot_clip.right, plot_clip.bottom);
+
+ /* tile down and across to extents */
+ for (xf = x; xf < plot_clip.right; xf += width) {
+ for (yf = y; yf < plot_clip.bottom; yf += height) {
+
+ plot_bitmap(bitmap, xf, yf, width, height);
+ if (!repeat_y)
+ break;
+ }
+ if (!repeat_x)
+ break;
+ }
+ return true;
+}
+
+
+static bool flush(void)
+{
+ PLOT_LOG("flush unimplemented");
+ return true;
+}
+
+static bool path(const float *p, unsigned int n, colour fill, float width,
+ colour c, const float transform[6])
+{
+ PLOT_LOG("path unimplemented");
+ return true;
+}
+
+const struct plotter_table win_plotters = {
+ .rectangle = rectangle,
+ .line = line,
+ .polygon = polygon,
+ .clip = clip,
+ .text = text,
+ .disc = disc,
+ .arc = arc,
+ .bitmap = windows_plot_bitmap,
+ .flush = flush,
+ .path = path,
+ .option_knockout = true,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 00:27:26 +0000