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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "webkit/plugins/ppapi/ppb_font_impl.h"
#include "ppapi/c/dev/ppb_font_dev.h"
#include "ppapi/shared_impl/ppapi_preferences.h"
#include "ppapi/thunk/thunk.h"
#include "webkit/plugins/ppapi/common.h"
#include "webkit/plugins/ppapi/plugin_module.h"
#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
#include "webkit/plugins/ppapi/ppb_image_data_impl.h"
#include "webkit/plugins/ppapi/string.h"
#include "webkit/plugins/ppapi/var.h"
using ::ppapi::WebKitForwarding;
namespace webkit {
namespace ppapi {
namespace {
// Converts the given PP_TextRun to a TextRun, returning true on success.
// False means the input was invalid.
bool PPTextRunToTextRun(const PP_TextRun_Dev* run,
WebKitForwarding::Font::TextRun* output) {
scoped_refptr<StringVar> text_string(StringVar::FromPPVar(run->text));
if (!text_string)
return false;
output->text = text_string->value();
output->rtl = PPBoolToBool(run->rtl);
output->override_direction = PPBoolToBool(run->override_direction);
return true;
}
} // namespace
PPB_Font_Impl::PPB_Font_Impl(PluginInstance* instance,
const PP_FontDescription_Dev& desc)
: Resource(instance) {
scoped_refptr<StringVar> face_name(StringVar::FromPPVar(desc.face));
WebKitForwarding::Font* result = NULL;
instance->module()->GetWebKitForwarding()->CreateFontForwarding(
NULL, desc, face_name ? face_name->value() : std::string(),
instance->delegate()->GetPreferences(), &result);
font_forwarding_.reset(result);
}
PPB_Font_Impl::~PPB_Font_Impl() {
}
::ppapi::thunk::PPB_Font_API* PPB_Font_Impl::AsFont_API() {
return this;
}
PPB_Font_Impl* PPB_Font_Impl::AsPPB_Font_Impl() {
return this;
}
PP_Bool PPB_Font_Impl::Describe(PP_FontDescription_Dev* description,
PP_FontMetrics_Dev* metrics) {
std::string face;
PP_Bool result = PP_FALSE;
font_forwarding_->Describe(NULL, description, &face, metrics, &result);
if (!result)
return PP_FALSE;
// Convert the string.
description->face = StringVar::StringToPPVar(instance()->module(), face);
return PP_TRUE;
}
PP_Bool PPB_Font_Impl::DrawTextAt(PP_Resource image_data,
const PP_TextRun_Dev* text,
const PP_Point* position,
uint32_t color,
const PP_Rect* clip,
PP_Bool image_data_is_opaque) {
// Get and map the image data we're painting to.
scoped_refptr<PPB_ImageData_Impl> image_resource(
Resource::GetAs<PPB_ImageData_Impl>(image_data));
if (!image_resource.get())
return PP_FALSE;
ImageDataAutoMapper mapper(image_resource);
if (!mapper.is_valid())
return PP_FALSE;
WebKitForwarding::Font::TextRun run;
if (!PPTextRunToTextRun(text, &run))
return PP_FALSE;
font_forwarding_->DrawTextAt(NULL, WebKitForwarding::Font::DrawTextParams(
image_resource->mapped_canvas(), run, position,
color, clip, image_data_is_opaque));
return PP_TRUE;
}
int32_t PPB_Font_Impl::MeasureText(const PP_TextRun_Dev* text) {
int32_t result = -1;
WebKitForwarding::Font::TextRun run;
if (PPTextRunToTextRun(text, &run))
font_forwarding_->MeasureText(NULL, run, &result);
return result;
}
uint32_t PPB_Font_Impl::CharacterOffsetForPixel(const PP_TextRun_Dev* text,
int32_t pixel_position) {
uint32_t result = -1;
WebKitForwarding::Font::TextRun run;
if (PPTextRunToTextRun(text, &run)) {
font_forwarding_->CharacterOffsetForPixel(NULL, run, pixel_position,
&result);
}
return result;
}
int32_t PPB_Font_Impl::PixelOffsetForCharacter(const PP_TextRun_Dev* text,
uint32_t char_offset) {
int32_t result = -1;
WebKitForwarding::Font::TextRun run;
if (PPTextRunToTextRun(text, &run)) {
font_forwarding_->PixelOffsetForCharacter(NULL, run, char_offset, &result);
}
return result;
}
PPB_Font_FunctionImpl::PPB_Font_FunctionImpl() {
}
PPB_Font_FunctionImpl::~PPB_Font_FunctionImpl() {
}
::ppapi::thunk::PPB_Font_FunctionAPI*
PPB_Font_FunctionImpl::AsFont_FunctionAPI() {
return this;
}
PP_Var PPB_Font_FunctionImpl::GetFontFamilies(PP_Instance instance) {
return PP_MakeUndefined();
}
} // namespace ppapi
} // namespace webkit
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