137 lines
4.2 KiB
C
137 lines
4.2 KiB
C
/*
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* Copyright (C) 2007-2021 Kim Woelders
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies of the Software, its documentation and marketing & publicity
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* materials, and acknowledgment shall be given in the documentation, materials
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* and software packages that this Software was used.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "config.h"
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#include <X11/Xft/Xft.h>
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#include <pango/pangoxft.h>
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#include "tclass.h"
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#include "xwin.h"
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/*
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* Pango-Xft
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*/
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__EXPORT__ extern const FontOps FontOps_pango;
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static PangoContext *_pango_ctx = NULL;
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/* Beware! The layout of FontCtxPangoXft must match FontCtxXft
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* in order to reuse the _xft_Fdc... functions. */
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typedef struct {
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PangoFontDescription *font;
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Win win;
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EX_Drawable draw;
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XftDraw *xftd;
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XftColor xftc;
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} FontCtxPangoXft;
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static int
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_pango_xft_Load(TextState *ts, const char *name)
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{
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FontCtxPangoXft *fdc;
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PangoFontMap *fmap;
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PangoFontDescription *font;
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PangoFontMask flags;
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if (!_pango_ctx)
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{
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fmap = pango_xft_get_font_map(disp, Dpy.screen);
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if (!fmap)
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return -1;
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_pango_ctx = pango_font_map_create_context(fmap);
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if (!_pango_ctx)
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return -1;
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}
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font = pango_font_description_from_string(name);
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if (!font)
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return -1;
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flags = pango_font_description_get_set_fields(font);
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if ((flags & PANGO_FONT_MASK_FAMILY) == 0)
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pango_font_description_set_family(font, "sans");
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if ((flags & PANGO_FONT_MASK_SIZE) == 0)
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pango_font_description_set_size(font, 10 * PANGO_SCALE);
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fdc = EMALLOC(FontCtxPangoXft, 1);
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if (!fdc)
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return -1;
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fdc->font = font;
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ts->fdc = fdc;
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ts->need_utf8 = 1;
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ts->type = FONT_TYPE_PANGO_XFT;
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ts->ops = &FontOps_pango;
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return 0;
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}
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static void
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_pango_xft_Unload(TextState *ts)
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{
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FontCtxPangoXft *fdc = (FontCtxPangoXft *) ts->fdc;
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pango_font_description_free(fdc->font);
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}
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static void
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_pango_xft_TextSize(TextState *ts, const char *text, int len __UNUSED__,
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int *width, int *height, int *ascent)
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{
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FontCtxPangoXft *fdc = (FontCtxPangoXft *) ts->fdc;
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PangoLayout *layout;
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PangoRectangle logical_rect;
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layout = pango_layout_new(_pango_ctx);
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pango_layout_set_text(layout, text, -1);
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pango_layout_set_font_description(layout, fdc->font);
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pango_layout_get_extents(layout, NULL, &logical_rect);
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*width = PANGO_PIXELS(logical_rect.x + logical_rect.width);
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*height = PANGO_PIXELS(logical_rect.height);
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*ascent = PANGO_PIXELS(-logical_rect.y);
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g_object_unref(layout);
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}
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static void
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_pango_xft_TextDraw(TextState *ts, int x, int y, const char *text,
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int len __UNUSED__)
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{
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FontCtxPangoXft *fdc = (FontCtxPangoXft *) ts->fdc;
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PangoLayout *layout;
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layout = pango_layout_new(_pango_ctx);
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pango_layout_set_text(layout, text, -1);
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pango_layout_set_font_description(layout, fdc->font);
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pango_xft_render_layout(fdc->xftd, &(fdc->xftc), layout,
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x * PANGO_SCALE, y * PANGO_SCALE);
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g_object_unref(layout);
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}
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const FontOps FontOps_pango = {
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_pango_xft_Load, _pango_xft_Unload,
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_pango_xft_TextSize, TextstateTextFit, _pango_xft_TextDraw,
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_xft_FdcInit, _xft_FdcFini, _xft_FdcSetDrawable, _xft_FdcSetColor
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};
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