зеркало из https://github.com/mozilla/gecko-dev.git
319 строки
11 KiB
Diff
Executable File
319 строки
11 KiB
Diff
Executable File
Index: gfx/cairo/cairo/src/cairo-win32-font.c
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===================================================================
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RCS file: /cvsroot/mozilla/gfx/cairo/cairo/src/cairo-win32-font.c,v
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retrieving revision 1.21
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diff -u -p -1 -2 -r1.21 cairo-win32-font.c
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--- gfx/cairo/cairo/src/cairo-win32-font.c 4 Apr 2007 01:09:15 -0000 1.21
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+++ gfx/cairo/cairo/src/cairo-win32-font.c 14 Apr 2007 09:05:25 -0000
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@@ -218,27 +218,33 @@ _get_system_quality (void)
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}
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if (smoothing_type == FE_FONTSMOOTHINGCLEARTYPE)
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return CLEARTYPE_QUALITY;
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}
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return ANTIALIASED_QUALITY;
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} else {
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return DEFAULT_QUALITY;
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}
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}
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+/* If face_hfont is non-NULL then font_matrix must be a simple scale by some
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+ * factor S, ctm must be the identity, logfont->lfHeight must be -S,
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+ * logfont->lfWidth, logfont->lfEscapement, logfont->lfOrientation must
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+ * all be 0, and face_hfont is the result of calling CreateFontIndirectW on
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+ * logfont.
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+ */
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static cairo_scaled_font_t *
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_win32_scaled_font_create (LOGFONTW *logfont,
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- HFONT hfont,
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+ HFONT face_hfont,
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cairo_font_face_t *font_face,
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const cairo_matrix_t *font_matrix,
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const cairo_matrix_t *ctm,
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const cairo_font_options_t *options)
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{
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cairo_win32_scaled_font_t *f;
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cairo_matrix_t scale;
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cairo_status_t status;
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_cairo_win32_initialize ();
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f = malloc (sizeof(cairo_win32_scaled_font_t));
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@@ -268,29 +274,38 @@ _win32_scaled_font_create (LOGFONTW
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case CAIRO_ANTIALIAS_SUBPIXEL:
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if (_have_cleartype_quality ())
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f->quality = CLEARTYPE_QUALITY;
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else
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f->quality = ANTIALIASED_QUALITY;
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break;
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case CAIRO_ANTIALIAS_DEFAULT:
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ASSERT_NOT_REACHED;
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}
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}
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f->em_square = 0;
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- f->scaled_hfont = hfont;
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+ f->scaled_hfont = NULL;
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f->unscaled_hfont = NULL;
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-
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- /* don't delete the hfont if it was passed in to us */
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- f->delete_scaled_hfont = !hfont;
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+ if (f->quality == logfont->lfQuality ||
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+ (logfont->lfQuality == DEFAULT_QUALITY &&
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+ options->antialias == CAIRO_ANTIALIAS_DEFAULT)) {
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+ /* If face_hfont is non-NULL, then we can use it to avoid creating our
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+ * own --- because the constraints on face_hfont mentioned above
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+ * guarantee it was created in exactly the same way that
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+ * _win32_scaled_font_get_scaled_hfont would create it.
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+ */
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+ f->scaled_hfont = face_hfont;
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+ }
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+ /* don't delete the hfont if we're using the one passed in to us */
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+ f->delete_scaled_hfont = !f->scaled_hfont;
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cairo_matrix_multiply (&scale, font_matrix, ctm);
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_compute_transform (f, &scale);
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_cairo_scaled_font_init (&f->base, font_face,
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font_matrix, ctm, options,
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&cairo_win32_scaled_font_backend);
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status = _cairo_win32_scaled_font_set_metrics (f);
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if (status) {
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cairo_scaled_font_destroy (&f->base);
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return NULL;
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@@ -1479,133 +1494,177 @@ const cairo_scaled_font_backend_t cairo_
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_cairo_win32_scaled_font_glyph_init,
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_cairo_win32_scaled_font_text_to_glyphs,
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NULL, /* ucs4_to_index */
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_cairo_win32_scaled_font_show_glyphs,
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_cairo_win32_scaled_font_load_truetype_table,
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_cairo_win32_scaled_font_map_glyphs_to_unicode,
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};
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/* cairo_win32_font_face_t */
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typedef struct _cairo_win32_font_face cairo_win32_font_face_t;
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+/* If hfont is non-NULL then logfont->lfHeight must be -S for some S,
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+ * logfont->lfWidth, logfont->lfEscapement, logfont->lfOrientation must
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+ * all be 0, and hfont is the result of calling CreateFontIndirectW on
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+ * logfont.
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+ */
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struct _cairo_win32_font_face {
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cairo_font_face_t base;
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LOGFONTW logfont;
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HFONT hfont;
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};
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/* implement the platform-specific interface */
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static void
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_cairo_win32_font_face_destroy (void *abstract_face)
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{
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}
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+static cairo_bool_t
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+_is_scale (const cairo_matrix_t *matrix, double scale)
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+{
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+ return matrix->xx == scale && matrix->yy == scale &&
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+ matrix->xy == 0. && matrix->yx == 0. &&
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+ matrix->x0 == 0. && matrix->y0 == 0.;
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+}
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+
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static cairo_status_t
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_cairo_win32_font_face_scaled_font_create (void *abstract_face,
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const cairo_matrix_t *font_matrix,
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const cairo_matrix_t *ctm,
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const cairo_font_options_t *options,
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cairo_scaled_font_t **font)
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{
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+ HFONT hfont = NULL;
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+
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cairo_win32_font_face_t *font_face = abstract_face;
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_cairo_win32_initialize ();
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+ if (font_face->hfont) {
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+ /* Check whether it's OK to go ahead and use the font-face's HFONT. */
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+ if (_is_scale (ctm, 1.) &&
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+ _is_scale (font_matrix, -font_face->logfont.lfHeight)) {
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+ hfont = font_face->hfont;
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+ }
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+ }
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+
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*font = _win32_scaled_font_create (&font_face->logfont,
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- font_face->hfont,
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+ hfont,
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&font_face->base,
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font_matrix, ctm, options);
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if (*font)
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return CAIRO_STATUS_SUCCESS;
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else
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return CAIRO_STATUS_NO_MEMORY;
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}
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static const cairo_font_face_backend_t _cairo_win32_font_face_backend = {
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CAIRO_FONT_TYPE_WIN32,
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_cairo_win32_font_face_destroy,
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_cairo_win32_font_face_scaled_font_create
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};
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/**
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- * cairo_win32_font_face_create_for_logfontw:
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+ * cairo_win32_font_face_create_for_logfontw_hfont:
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* @logfont: A #LOGFONTW structure specifying the font to use.
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- * The lfHeight, lfWidth, lfOrientation and lfEscapement
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- * fields of this structure are ignored.
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+ * If hfont is null then the lfHeight, lfWidth, lfOrientation and lfEscapement
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+ * fields of this structure are ignored. Otherwise lfWidth, lfOrientation and
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+ * lfEscapement must be zero.
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+ * @font: An #HFONT that can be used when the font matrix is a scale by
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+ * -lfHeight and the CTM is identity.
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*
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* Creates a new font for the Win32 font backend based on a
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* #LOGFONT. This font can then be used with
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* cairo_set_font_face() or cairo_scaled_font_create().
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* The #cairo_scaled_font_t
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* returned from cairo_scaled_font_create() is also for the Win32 backend
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* and can be used with functions such as cairo_win32_scaled_font_select_font().
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*
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* Return value: a newly created #cairo_font_face_t. Free with
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* cairo_font_face_destroy() when you are done using it.
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**/
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cairo_font_face_t *
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-cairo_win32_font_face_create_for_logfontw (LOGFONTW *logfont)
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+cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font)
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{
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cairo_win32_font_face_t *font_face;
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_cairo_win32_initialize ();
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font_face = malloc (sizeof (cairo_win32_font_face_t));
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if (!font_face) {
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- _cairo_error (CAIRO_STATUS_NO_MEMORY);
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- return (cairo_font_face_t *)&_cairo_font_face_nil;
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+ _cairo_error (CAIRO_STATUS_NO_MEMORY);
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+ return (cairo_font_face_t *)&_cairo_font_face_nil;
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}
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font_face->logfont = *logfont;
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- font_face->hfont = NULL;
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+ font_face->hfont = font;
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_cairo_font_face_init (&font_face->base, &_cairo_win32_font_face_backend);
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return &font_face->base;
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}
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/**
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+ * cairo_win32_font_face_create_for_logfontw:
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+ * @logfont: A #LOGFONTW structure specifying the font to use.
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+ * The lfHeight, lfWidth, lfOrientation and lfEscapement
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+ * fields of this structure are ignored.
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+ *
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+ * Creates a new font for the Win32 font backend based on a
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+ * #LOGFONT. This font can then be used with
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+ * cairo_set_font_face() or cairo_scaled_font_create().
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+ * The #cairo_scaled_font_t
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+ * returned from cairo_scaled_font_create() is also for the Win32 backend
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+ * and can be used with functions such as cairo_win32_scaled_font_select_font().
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+ *
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+ * Return value: a newly created #cairo_font_face_t. Free with
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+ * cairo_font_face_destroy() when you are done using it.
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+ **/
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+cairo_font_face_t *
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+cairo_win32_font_face_create_for_logfontw (LOGFONTW *logfont)
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+{
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+ return cairo_win32_font_face_create_for_logfontw_hfont (logfont, NULL);
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+}
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+
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+/**
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* cairo_win32_font_face_create_for_hfont:
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* @font: An #HFONT structure specifying the font to use.
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*
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* Creates a new font for the Win32 font backend based on a
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* #HFONT. This font can then be used with
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* cairo_set_font_face() or cairo_scaled_font_create().
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* The #cairo_scaled_font_t
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* returned from cairo_scaled_font_create() is also for the Win32 backend
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* and can be used with functions such as cairo_win32_scaled_font_select_font().
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*
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* Return value: a newly created #cairo_font_face_t. Free with
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* cairo_font_face_destroy() when you are done using it.
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**/
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cairo_font_face_t *
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cairo_win32_font_face_create_for_hfont (HFONT font)
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{
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- cairo_win32_font_face_t *font_face;
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-
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- _cairo_win32_initialize ();
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+ LOGFONTW logfont;
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+ GetObject (font, sizeof(logfont), &logfont);
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- font_face = malloc (sizeof (cairo_win32_font_face_t));
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- if (!font_face) {
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- _cairo_error (CAIRO_STATUS_NO_MEMORY);
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- return (cairo_font_face_t *)&_cairo_font_face_nil;
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+ if (logfont.lfEscapement != 0 || logfont.lfOrientation != 0 ||
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+ logfont.lfWidth != 0) {
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+ /* We can't use this font because that optimization requires that
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+ * lfEscapement, lfOrientation and lfWidth be zero. */
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+ font = NULL;
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}
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- font_face->hfont = font;
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-
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- _cairo_font_face_init (&font_face->base, &_cairo_win32_font_face_backend);
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-
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- return &font_face->base;
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+ return cairo_win32_font_face_create_for_logfontw_hfont (&logfont, font);
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}
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/**
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* cairo_win32_scaled_font_select_font:
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* @scaled_font: A #cairo_scaled_font_t from the Win32 font backend. Such an
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* object can be created with cairo_win32_scaled_font_create_for_logfontw().
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* @hdc: a device context
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*
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* Selects the font into the given device context and changes the
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* map mode and world transformation of the device context to match
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* that of the font. This function is intended for use when using
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* layout APIs such as Uniscribe to do text layout with the
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Index: gfx/cairo/cairo/src/cairo-win32.h
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===================================================================
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RCS file: /cvsroot/mozilla/gfx/cairo/cairo/src/cairo-win32.h,v
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retrieving revision 1.14
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diff -u -p -1 -2 -r1.14 cairo-win32.h
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--- gfx/cairo/cairo/src/cairo-win32.h 24 Jan 2007 23:53:03 -0000 1.14
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+++ gfx/cairo/cairo/src/cairo-win32.h 14 Apr 2007 09:05:25 -0000
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@@ -61,24 +61,27 @@ cairo_win32_surface_create_with_dib (cai
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cairo_public HDC
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cairo_win32_surface_get_dc (cairo_surface_t *surface);
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cairo_public cairo_surface_t *
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cairo_win32_surface_get_image (cairo_surface_t *surface);
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cairo_public cairo_font_face_t *
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cairo_win32_font_face_create_for_logfontw (LOGFONTW *logfont);
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cairo_public cairo_font_face_t *
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cairo_win32_font_face_create_for_hfont (HFONT font);
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+cairo_public cairo_font_face_t *
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+cairo_win32_font_face_create_for_logfontw_hfont (LOGFONTW *logfont, HFONT font);
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+
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cairo_public cairo_status_t
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cairo_win32_scaled_font_select_font (cairo_scaled_font_t *scaled_font,
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HDC hdc);
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cairo_public void
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cairo_win32_scaled_font_done_font (cairo_scaled_font_t *scaled_font);
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cairo_public double
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cairo_win32_scaled_font_get_metrics_factor (cairo_scaled_font_t *scaled_font);
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cairo_public void
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cairo_win32_scaled_font_get_logical_to_device (cairo_scaled_font_t *scaled_font,
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