| /************************************************************************** |
| * |
| * Copyright 2010 LunarG, Inc. All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
| * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| #include "util/u_memory.h" |
| #include "cso_cache/cso_hash.h" |
| |
| #include "text.h" |
| #include "image.h" |
| #include "path.h" |
| |
| #ifdef OPENVG_VERSION_1_1 |
| |
| struct vg_font { |
| struct vg_object base; |
| struct cso_hash *glyphs; |
| }; |
| |
| struct vg_glyph { |
| struct vg_object *object; /* it could be NULL */ |
| VGboolean is_hinted; |
| VGfloat glyph_origin[2]; |
| VGfloat escapement[2]; |
| }; |
| |
| static VGboolean del_glyph(struct vg_font *font, |
| VGuint glyphIndex) |
| { |
| struct vg_glyph *glyph; |
| |
| glyph = (struct vg_glyph *) |
| cso_hash_take(font->glyphs, (unsigned) glyphIndex); |
| if (glyph) |
| FREE(glyph); |
| |
| return (glyph != NULL); |
| } |
| |
| static void add_glyph(struct vg_font *font, |
| VGuint glyphIndex, |
| struct vg_object *obj, |
| VGboolean isHinted, |
| const VGfloat glyphOrigin[2], |
| const VGfloat escapement[2]) |
| { |
| struct vg_glyph *glyph; |
| |
| /* remove the existing one */ |
| del_glyph(font, glyphIndex); |
| |
| glyph = CALLOC_STRUCT(vg_glyph); |
| glyph->object = obj; |
| glyph->is_hinted = isHinted; |
| memcpy(glyph->glyph_origin, glyphOrigin, sizeof(glyph->glyph_origin)); |
| memcpy(glyph->escapement, escapement, sizeof(glyph->glyph_origin)); |
| |
| cso_hash_insert(font->glyphs, (unsigned) glyphIndex, glyph); |
| } |
| |
| static struct vg_glyph *get_glyph(struct vg_font *font, |
| VGuint glyphIndex) |
| { |
| struct cso_hash_iter iter; |
| |
| iter = cso_hash_find(font->glyphs, (unsigned) glyphIndex); |
| return (struct vg_glyph *) cso_hash_iter_data(iter); |
| } |
| |
| static void vg_render_glyph(struct vg_context *ctx, |
| struct vg_glyph *glyph, |
| VGbitfield paintModes, |
| VGboolean allowAutoHinting) |
| { |
| if (glyph->object && paintModes) { |
| struct vg_state *state = &ctx->state.vg; |
| struct matrix m; |
| |
| m = state->glyph_user_to_surface_matrix; |
| matrix_translate(&m, |
| state->glyph_origin[0].f - glyph->glyph_origin[0], |
| state->glyph_origin[1].f - glyph->glyph_origin[1]); |
| |
| if (glyph->object->type == VG_OBJECT_PATH) { |
| path_render((struct path *) glyph->object, paintModes, &m); |
| } |
| else { |
| assert(glyph->object->type == VG_OBJECT_IMAGE); |
| image_draw((struct vg_image *) glyph->object, &m); |
| } |
| } |
| } |
| |
| static void vg_advance_glyph(struct vg_context *ctx, |
| struct vg_glyph *glyph, |
| VGfloat adjustment_x, |
| VGfloat adjustment_y, |
| VGboolean last) |
| { |
| struct vg_value *glyph_origin = ctx->state.vg.glyph_origin; |
| |
| glyph_origin[0].f += glyph->escapement[0] + adjustment_x; |
| glyph_origin[1].f += glyph->escapement[1] + adjustment_y; |
| |
| if (last) { |
| glyph_origin[0].i = float_to_int_floor(glyph_origin[0].f); |
| glyph_origin[1].i = float_to_int_floor(glyph_origin[1].f); |
| } |
| } |
| |
| struct vg_font *font_create(VGint glyphCapacityHint) |
| { |
| struct vg_context *ctx = vg_current_context(); |
| struct vg_font *font; |
| |
| font = CALLOC_STRUCT(vg_font); |
| vg_init_object(&font->base, ctx, VG_OBJECT_FONT); |
| font->glyphs = cso_hash_create(); |
| |
| vg_context_add_object(ctx, &font->base); |
| |
| return font; |
| } |
| |
| void font_destroy(struct vg_font *font) |
| { |
| struct vg_context *ctx = vg_current_context(); |
| struct cso_hash_iter iter; |
| |
| vg_context_remove_object(ctx, &font->base); |
| |
| iter = cso_hash_first_node(font->glyphs); |
| while (!cso_hash_iter_is_null(iter)) { |
| struct vg_glyph *glyph = (struct vg_glyph *) cso_hash_iter_data(iter); |
| FREE(glyph); |
| iter = cso_hash_iter_next(iter); |
| } |
| cso_hash_delete(font->glyphs); |
| |
| FREE(font); |
| } |
| |
| void font_set_glyph_to_path(struct vg_font *font, |
| VGuint glyphIndex, |
| struct path *path, |
| VGboolean isHinted, |
| const VGfloat glyphOrigin[2], |
| const VGfloat escapement[2]) |
| { |
| add_glyph(font, glyphIndex, (struct vg_object *) path, |
| isHinted, glyphOrigin, escapement); |
| } |
| |
| void font_set_glyph_to_image(struct vg_font *font, |
| VGuint glyphIndex, |
| struct vg_image *image, |
| const VGfloat glyphOrigin[2], |
| const VGfloat escapement[2]) |
| { |
| add_glyph(font, glyphIndex, (struct vg_object *) image, |
| VG_TRUE, glyphOrigin, escapement); |
| } |
| |
| void font_clear_glyph(struct vg_font *font, |
| VGuint glyphIndex) |
| { |
| if (!del_glyph(font, glyphIndex)) { |
| struct vg_context *ctx = vg_current_context(); |
| vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); |
| } |
| } |
| |
| void font_draw_glyph(struct vg_font *font, |
| VGuint glyphIndex, |
| VGbitfield paintModes, |
| VGboolean allowAutoHinting) |
| { |
| struct vg_context *ctx = vg_current_context(); |
| struct vg_glyph *glyph; |
| |
| glyph = get_glyph(font, glyphIndex); |
| if (!glyph) { |
| vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); |
| return; |
| } |
| |
| vg_render_glyph(ctx, glyph, paintModes, allowAutoHinting); |
| vg_advance_glyph(ctx, glyph, 0.0f, 0.0f, VG_TRUE); |
| } |
| |
| void font_draw_glyphs(struct vg_font *font, |
| VGint glyphCount, |
| const VGuint *glyphIndices, |
| const VGfloat *adjustments_x, |
| const VGfloat *adjustments_y, |
| VGbitfield paintModes, |
| VGboolean allowAutoHinting) |
| { |
| struct vg_context *ctx = vg_current_context(); |
| VGint i; |
| |
| for (i = 0; i < glyphCount; ++i) { |
| if (!get_glyph(font, glyphIndices[i])) { |
| vg_set_error(ctx, VG_ILLEGAL_ARGUMENT_ERROR); |
| return; |
| } |
| } |
| |
| for (i = 0; i < glyphCount; ++i) { |
| struct vg_glyph *glyph; |
| VGfloat adj_x, adj_y; |
| |
| glyph = get_glyph(font, glyphIndices[i]); |
| |
| vg_render_glyph(ctx, glyph, paintModes, allowAutoHinting); |
| |
| adj_x = (adjustments_x) ? adjustments_x[i] : 0.0f; |
| adj_y = (adjustments_y) ? adjustments_y[i] : 0.0f; |
| vg_advance_glyph(ctx, glyph, adj_x, adj_y, (i == glyphCount - 1)); |
| } |
| } |
| |
| VGint font_num_glyphs(struct vg_font *font) |
| { |
| return cso_hash_size(font->glyphs); |
| } |
| |
| #endif /* OPENVG_VERSION_1_1 */ |