void ACanvasSkia::DrawText(ARect r,const AString& sText,StringAlignment hAlign /*= StringAlignmentNear*/,StringAlignmentV vAlign /*=StringAlignmentMiddle*/)
{
AFont* pFont = GetFont();
_clip();
AAutoClip clip(this,r);
int maxWidth = MeasureText(sText).cx;
int nFontSize = pFont->GetSize();
int x=r.left;
int delta = ((int)r.GetWidth()-maxWidth)/2;
switch(hAlign)
{
default:
case StringAlignmentNear:
x = (REAL)r.left;
break;
case StringAlignmentCenter:
x = r.left+delta;
break;
case StringAlignmentFar:
x = r.right - maxWidth;
break;
}
int y = r.top;
switch(vAlign)
{
default:
case StringAlignmentTop:
y = r.top;
break;
case StringAlignmentMiddle:
y = r.top + (r.GetHeight()-nFontSize)/2 - ( (r.GetHeight()-nFontSize) % 2);
break;
case StringAlignmentBottom:
y = r.bottom-nFontSize;
break;
}
//y -= 2;//微调 fix me later
//y -= nFontSize/2;
DrawText(x,y,sText);
}
inline void AdaGradOptimizer::Update(int index, NDArray weight, NDArray grad) {
if (history_.count(index) == 0) {
CreateState_(index, weight);
}
float eps = std::stof(params_["eps"]);
float lr = GetLR_(index);
float wd = GetWD_(index);
UpdateCount_(index);
if (params_.count("rescale_grad") > 0) {
grad *= std::stof(params_["rescale_grad"]);
}
if (params_.count("clip_gradient") > 0) {
_clip(grad, std::stof(params_["clip_gradient"]));
}
auto& history = *history_[index];
history += grad * grad;
weight -= (grad / _sqrt(history + eps) + weight * wd) * lr;
}
static cairo_status_t
_cairo_recording_surface_replay_internal (cairo_surface_t *surface,
const cairo_rectangle_int_t *surface_extents,
cairo_surface_t *target,
cairo_recording_replay_type_t type,
cairo_recording_region_type_t region)
{
cairo_recording_surface_t *recording_surface;
cairo_command_t **elements;
int i, num_elements;
cairo_int_status_t status;
cairo_surface_wrapper_t wrapper;
if (unlikely (surface->status))
return surface->status;
if (unlikely (target->status))
return target->status;
if (unlikely (surface->finished))
return _cairo_error (CAIRO_STATUS_SURFACE_FINISHED);
if (surface->is_clear)
return CAIRO_STATUS_SUCCESS;
assert (_cairo_surface_is_recording (surface));
_cairo_surface_wrapper_init (&wrapper, target);
_cairo_surface_wrapper_set_extents (&wrapper, surface_extents);
recording_surface = (cairo_recording_surface_t *) surface;
status = CAIRO_STATUS_SUCCESS;
num_elements = recording_surface->commands.num_elements;
elements = _cairo_array_index (&recording_surface->commands, 0);
for (i = recording_surface->replay_start_idx; i < num_elements; i++) {
cairo_command_t *command = elements[i];
if (type == CAIRO_RECORDING_REPLAY && region != CAIRO_RECORDING_REGION_ALL) {
if (command->header.region != region)
continue;
}
switch (command->header.type) {
case CAIRO_COMMAND_PAINT:
status = _cairo_surface_wrapper_paint (&wrapper,
command->header.op,
&command->paint.source.base,
_clip (command));
break;
case CAIRO_COMMAND_MASK:
status = _cairo_surface_wrapper_mask (&wrapper,
command->header.op,
&command->mask.source.base,
&command->mask.mask.base,
_clip (command));
break;
case CAIRO_COMMAND_STROKE:
{
status = _cairo_surface_wrapper_stroke (&wrapper,
command->header.op,
&command->stroke.source.base,
&command->stroke.path,
&command->stroke.style,
&command->stroke.ctm,
&command->stroke.ctm_inverse,
command->stroke.tolerance,
command->stroke.antialias,
_clip (command));
break;
}
case CAIRO_COMMAND_FILL:
{
cairo_command_t *stroke_command;
stroke_command = NULL;
if (type != CAIRO_RECORDING_CREATE_REGIONS && i < num_elements - 1)
stroke_command = elements[i + 1];
if (stroke_command != NULL &&
type == CAIRO_RECORDING_REPLAY &&
region != CAIRO_RECORDING_REGION_ALL)
{
if (stroke_command->header.region != region)
stroke_command = NULL;
}
if (stroke_command != NULL &&
stroke_command->header.type == CAIRO_COMMAND_STROKE &&
_cairo_path_fixed_is_equal (&command->fill.path,
&stroke_command->stroke.path))
{
status = _cairo_surface_wrapper_fill_stroke (&wrapper,
command->header.op,
&command->fill.source.base,
command->fill.fill_rule,
command->fill.tolerance,
command->fill.antialias,
&command->fill.path,
stroke_command->header.op,
&stroke_command->stroke.source.base,
&stroke_command->stroke.style,
&stroke_command->stroke.ctm,
&stroke_command->stroke.ctm_inverse,
stroke_command->stroke.tolerance,
stroke_command->stroke.antialias,
_clip (command));
i++;
}
else
{
status = _cairo_surface_wrapper_fill (&wrapper,
command->header.op,
&command->fill.source.base,
&command->fill.path,
command->fill.fill_rule,
command->fill.tolerance,
command->fill.antialias,
_clip (command));
}
break;
}
case CAIRO_COMMAND_SHOW_TEXT_GLYPHS:
{
cairo_glyph_t *glyphs = command->show_text_glyphs.glyphs;
cairo_glyph_t *glyphs_copy;
int num_glyphs = command->show_text_glyphs.num_glyphs;
/* show_text_glyphs is special because _cairo_surface_show_text_glyphs is allowed
* to modify the glyph array that's passed in. We must always
* copy the array before handing it to the backend.
*/
glyphs_copy = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
if (unlikely (glyphs_copy == NULL)) {
status = _cairo_error (CAIRO_STATUS_NO_MEMORY);
break;
}
memcpy (glyphs_copy, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
status = _cairo_surface_wrapper_show_text_glyphs (&wrapper,
command->header.op,
&command->show_text_glyphs.source.base,
command->show_text_glyphs.utf8, command->show_text_glyphs.utf8_len,
glyphs_copy, num_glyphs,
command->show_text_glyphs.clusters, command->show_text_glyphs.num_clusters,
command->show_text_glyphs.cluster_flags,
command->show_text_glyphs.scaled_font,
_clip (command));
free (glyphs_copy);
break;
}
default:
ASSERT_NOT_REACHED;
}
if (type == CAIRO_RECORDING_CREATE_REGIONS) {
if (status == CAIRO_STATUS_SUCCESS) {
command->header.region = CAIRO_RECORDING_REGION_NATIVE;
} else if (status == CAIRO_INT_STATUS_IMAGE_FALLBACK) {
command->header.region = CAIRO_RECORDING_REGION_IMAGE_FALLBACK;
status = CAIRO_STATUS_SUCCESS;
} else {
assert (_cairo_status_is_error (status));
}
}
if (unlikely (status))
break;
}
/* free up any caches */
for (i = recording_surface->replay_start_idx; i < num_elements; i++) {
cairo_command_t *command = elements[i];
_cairo_clip_drop_cache (&command->header.clip);
}
_cairo_surface_wrapper_fini (&wrapper);
return _cairo_surface_set_error (surface, status);
}
