From e222f44f2677550b107bb1c84fbe63069b81208c Mon Sep 17 00:00:00 2001 From: "Elias G. Perez" Date: Fri, 10 May 2024 20:36:42 -0600 Subject: [PATCH] Stipple support for MS Windows * etc/NEWS: Announce support for stipples in MS-Windows. * src/w32term.h (w32_bitmap_record): Add stipple value. * src/w32term.c: (w32_fill_stipple_pattern): New function. (w32_draw_glyph_string_background, w32_draw_glyph_string_bg_rect) (w32_draw_stretch_glyph_string): Use new stipple function. * src/image.c: (image_create_bitmap_from_data): Create stipple bitmap. (image_create_bitmap_from_file): Add suuport for pixmap and create stipple bitmap. --- etc/NEWS | 3 ++ src/image.c | 98 ++++++++++++++++++++++++++++++++++++++++++--------- src/w32term.c | 55 ++++++++++++++++++----------- src/w32term.h | 1 + 4 files changed, 121 insertions(+), 36 deletions(-) diff --git a/etc/NEWS b/etc/NEWS index a79a5844a22..ff1932d42ca 100644 --- a/etc/NEWS +++ b/etc/NEWS @@ -2779,6 +2779,9 @@ title bars' and scroll bars' appearance. If the new user option will disregard the system's Dark mode and will always use the default Light mode. +--- +*** Emacs on MS-Windows now supports the :stipple face attribute + ---------------------------------------------------------------------- This file is part of GNU Emacs. diff --git a/src/image.c b/src/image.c index 3138ef25a63..427b530cb3a 100644 --- a/src/image.c +++ b/src/image.c @@ -130,6 +130,12 @@ #define NO_PIXMAP 0 #define PIX_MASK_RETAIN 0 #define PIX_MASK_DRAW 1 +#define XBM_BIT_SHUFFLE(b) (~(b)) + +#else + +#define XBM_BIT_SHUFFLE(b) (b) + #endif /* HAVE_NTGUI */ #ifdef HAVE_NS @@ -214,6 +220,13 @@ #define n_planes n_image_planes static unsigned long *colors_in_color_table (int *n); #endif +#ifdef HAVE_NTGUI +static HBITMAP w32_create_pixmap_from_bitmap_data (int width, + int height, + char *data); + +#endif + #if defined (HAVE_WEBP) || defined (HAVE_GIF) static void anim_prune_animation_cache (Lisp_Object); #endif @@ -596,13 +609,29 @@ image_create_bitmap_from_data (struct frame *f, char *bits, #endif /* HAVE_ANDROID && !defined ANDROID_STUBIFY */ #ifdef HAVE_NTGUI - Lisp_Object frame UNINIT; /* The value is not used. */ - Emacs_Pixmap bitmap; + Emacs_Pixmap stipple, bitmap; bitmap = CreateBitmap (width, height, - FRAME_DISPLAY_INFO (XFRAME (frame))->n_planes, - FRAME_DISPLAY_INFO (XFRAME (frame))->n_cbits, + dpyinfo->n_planes, + dpyinfo->n_cbits, bits); - if (! bitmap) + + /* Convert X bitmap to W32 bitmap. */ + /* Windows mono bitmaps are reversed compared with X. */ + { + USE_SAFE_ALLOCA; + char *invertedBits; + int nbytes, i; + + invertedBits = bits; + nbytes = (width + CHAR_BIT - 1) / CHAR_BIT * height; + + SAFE_NALLOCA (bits, 1, nbytes); + + for (i = 0; i < nbytes; i++) + bits[i] = XBM_BIT_SHUFFLE(invertedBits[i]); + } + stipple = w32_create_pixmap_from_bitmap_data (width, height, bits); + if (!bitmap || !stipple) return -1; #endif /* HAVE_NTGUI */ @@ -681,6 +710,7 @@ image_create_bitmap_from_data (struct frame *f, char *bits, #ifdef HAVE_NTGUI dpyinfo->bitmaps[id - 1].pixmap = bitmap; + dpyinfo->bitmaps[id - 1].stipple = stipple; dpyinfo->bitmaps[id - 1].hinst = NULL; dpyinfo->bitmaps[id - 1].depth = 1; #endif /* HAVE_NTGUI */ @@ -699,7 +729,7 @@ image_create_bitmap_from_data (struct frame *f, char *bits, #endif /* defined HAVE_ANDROID && !defined ANDROID_STUBIFY */ #if defined HAVE_HAIKU || defined HAVE_NS || defined HAVE_PGTK \ - || defined HAVE_ANDROID + || defined HAVE_ANDROID || defined HAVE_NTGUI static char *slurp_file (image_fd, ptrdiff_t *); static Lisp_Object image_find_image_fd (Lisp_Object, image_fd *); static bool xbm_read_bitmap_data (struct frame *, char *, char *, @@ -711,10 +741,53 @@ image_create_bitmap_from_data (struct frame *f, char *bits, ptrdiff_t image_create_bitmap_from_file (struct frame *f, Lisp_Object file) { -#if defined (HAVE_NTGUI) - return -1; /* W32_TODO : bitmap support */ -#else Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); + +#ifdef HAVE_NTGUI + ptrdiff_t id, size; + int width, height, rc; + image_fd fd; + char *contents, *data; + Emacs_Pixmap bitmap; + + if (!STRINGP (image_find_image_fd (file, &fd))) + return -1; + + contents = slurp_file (fd, &size); + + if (!contents) + return -1; + + rc = xbm_read_bitmap_data (f, contents, contents + size, + &width, &height, &data, 0); + + if (!rc) + { + xfree (contents); + return -1; + } + + { + /* Windows mono bitmaps are reversed compared with X. */ + + int nbytes, i; + nbytes = (width + CHAR_BIT - 1) / CHAR_BIT * height; + + for (i = 0; i < nbytes; i++) + data[i] = XBM_BIT_SHUFFLE(data[i]); + } + + id = image_allocate_bitmap_record (f); + bitmap = w32_create_pixmap_from_bitmap_data (width, height, data); + + dpyinfo->bitmaps[id - 1].height = width; + dpyinfo->bitmaps[id - 1].width = height; + dpyinfo->bitmaps[id - 1].stipple = bitmap; + dpyinfo->bitmaps[id - 1].file = xlispstrdup (file); + + xfree (contents); + xfree (data); + return id; #endif #ifdef HAVE_NS @@ -4747,7 +4820,6 @@ w32_create_pixmap_from_bitmap_data (int width, int height, char *data) int i, j, w1, w2; unsigned char *bits, *p; HBITMAP bmp; - w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ bits = alloca (height * w2); @@ -4800,12 +4872,6 @@ convert_mono_to_color_image (struct frame *f, struct image *img, img->pixmap = new_pixmap; } -#define XBM_BIT_SHUFFLE(b) (~(b)) - -#else - -#define XBM_BIT_SHUFFLE(b) (b) - #endif /* HAVE_NTGUI */ diff --git a/src/w32term.c b/src/w32term.c index 2bcd5d86a38..8a0cea417ca 100644 --- a/src/w32term.c +++ b/src/w32term.c @@ -1248,6 +1248,34 @@ w32_clear_glyph_string_rect (struct glyph_string *s, real_w, real_h); } +/* Fill background with bitmap pattern from S at specified position + given by X and Y. WIDTH and HEIGHT specifies bitmap size, GC is + used to get foreground and background color context and HDC where + fill it. */ + +static void +w32_fill_stipple_pattern (HDC hdc, struct glyph_string *s, Emacs_GC *gc, + int x, int y, unsigned int width, unsigned int height) +{ + SetTextColor (hdc, gc->foreground); + SetBkColor (hdc, gc->background); + + RECT r; + Emacs_Pixmap bm; + HBRUSH hb + + r.left = x; + r.top = y; + r.right = x + width; + r.bottom = y + height; + + bm = FRAME_DISPLAY_INFO (s->f)->bitmaps[s->face->stipple - 1].stipple; + + hb = CreatePatternBrush (bm); + FillRect (hdc, &r, hb); + + DeleteObject (hb); +} /* Draw the background of glyph_string S. If S->background_filled_p is non-zero don't draw it. FORCE_P non-zero means draw the @@ -1264,21 +1292,16 @@ w32_draw_glyph_string_background (struct glyph_string *s, bool force_p) { int box_line_width = max (s->face->box_horizontal_line_width, 0); -#if 0 /* TODO: stipple */ if (s->stippled_p) { /* Fill background with a stipple pattern. */ - XSetFillStyle (s->display, s->gc, FillOpaqueStippled); - XFillRectangle (s->display, FRAME_W32_WINDOW (s->f), s->gc, s->x, - s->y + box_line_width, - s->background_width, - s->height - 2 * box_line_width); - XSetFillStyle (s->display, s->gc, FillSolid); + w32_fill_stipple_pattern (s->hdc, s, s->gc, s->x, + s->y + box_line_width, + s->background_width, + s->height - 2 * box_line_width); s->background_filled_p = true; } - else -#endif - if (FONT_HEIGHT (s->font) < s->height - 2 * box_line_width + else if (FONT_HEIGHT (s->font) < s->height - 2 * box_line_width /* When xdisp.c ignores FONT_HEIGHT, we cannot trust font dimensions, since the actual glyphs might be much smaller. So in that case we always clear the @@ -2286,16 +2309,12 @@ w32_draw_image_foreground_1 (struct glyph_string *s, HBITMAP pixmap) static void w32_draw_glyph_string_bg_rect (struct glyph_string *s, int x, int y, int w, int h) { -#if 0 /* TODO: stipple */ if (s->stippled_p) { /* Fill background with a stipple pattern. */ - XSetFillStyle (s->display, s->gc, FillOpaqueStippled); - XFillRectangle (s->display, FRAME_W32_WINDOW (s->f), s->gc, x, y, w, h); - XSetFillStyle (s->display, s->gc, FillSolid); + w32_fill_stipple_pattern (s->hdc, s, s->gc, x, y, w, h); } else -#endif w32_clear_glyph_string_rect (s, x, y, w, h); } @@ -2500,16 +2519,12 @@ w32_draw_stretch_glyph_string (struct glyph_string *s) get_glyph_string_clip_rect (s, &r); w32_set_clip_rectangle (hdc, &r); -#if 0 /* TODO: stipple */ if (s->face->stipple) { /* Fill background with a stipple pattern. */ - XSetFillStyle (s->display, gc, FillOpaqueStippled); - XFillRectangle (s->display, FRAME_W32_WINDOW (s->f), gc, x, y, w, h); - XSetFillStyle (s->display, gc, FillSolid); + w32_fill_stipple_pattern (s->hdc, s, gc, x, y, w, h); } else -#endif { w32_fill_area (s->f, s->hdc, gc->background, x, y, w, h); } diff --git a/src/w32term.h b/src/w32term.h index 3120c8bd71f..1eb6a660248 100644 --- a/src/w32term.h +++ b/src/w32term.h @@ -58,6 +58,7 @@ #define CP_DEFAULT 1004 { Emacs_Pixmap pixmap; char *file; + Emacs_Pixmap stipple; HINSTANCE hinst; /* Used to load the file */ int refcount; /* Record some info about this pixmap. */ -- 2.44.0.windows.1