0,0 → 1,250 |
/************************************************************************** |
* |
* 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); |
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); |
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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)); |
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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; |
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font = CALLOC_STRUCT(vg_font); |
vg_init_object(&font->base, ctx, VG_OBJECT_FONT); |
font->glyphs = cso_hash_create(); |
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vg_context_add_object(ctx, &font->base); |
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return font; |
} |
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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); |
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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); |
|
vg_free_object(&font->base); |
|
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; |
} |
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vg_render_glyph(ctx, glyph, paintModes, allowAutoHinting); |
vg_advance_glyph(ctx, glyph, 0.0f, 0.0f, VG_TRUE); |
} |
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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; |
} |
} |
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for (i = 0; i < glyphCount; ++i) { |
struct vg_glyph *glyph; |
VGfloat adj_x, adj_y; |
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glyph = get_glyph(font, glyphIndices[i]); |
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vg_render_glyph(ctx, glyph, paintModes, allowAutoHinting); |
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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)); |
} |
} |
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VGint font_num_glyphs(struct vg_font *font) |
{ |
return cso_hash_size(font->glyphs); |
} |
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#endif /* OPENVG_VERSION_1_1 */ |