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/**************************************************************************
*
* 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);
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);
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;
}
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 */
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