blob: 1c72622c14448f66b622cd933f200f0adb3bfd23 [file] [log] [blame]
// Copyright (c) 2010 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 "ppapi/proxy/ppb_font_proxy.h"
#include "ppapi/c/dev/ppb_font_dev.h"
#include "ppapi/proxy/plugin_dispatcher.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/proxy/ppapi_messages.h"
namespace pp {
namespace proxy {
class Font : public PluginResource {
public:
Font();
virtual ~Font();
// PluginResource overrides.
virtual Font* AsFont() { return this; }
PP_FontDescription_Dev& desc() { return desc_; }
PP_FontDescription_Dev* desc_ptr() { return &desc_; }
PP_FontMetrics_Dev& metrics() { return metrics_; }
private:
PP_FontDescription_Dev desc_;
PP_FontMetrics_Dev metrics_;
DISALLOW_COPY_AND_ASSIGN(Font);
};
Font::Font() {
memset(&desc_, 0, sizeof(PP_FontDescription_Dev));
desc_.face.type = PP_VARTYPE_UNDEFINED;
memset(&metrics_, 0, sizeof(PP_FontMetrics_Dev));
}
Font::~Font() {
PluginDispatcher::Get()->plugin_var_tracker()->Release(desc_.face);
}
namespace {
PP_Resource Create(PP_Module module_id,
const PP_FontDescription_Dev* description) {
PluginDispatcher* dispatcher = PluginDispatcher::Get();
SerializedFontDescription in_description;
in_description.SetFromPPFontDescription(dispatcher, *description, true);
PP_Resource result;
SerializedFontDescription out_description;
std::string out_metrics;
PluginDispatcher::Get()->Send(new PpapiHostMsg_PPBFont_Create(
INTERFACE_ID_PPB_FONT,
module_id, in_description, &result, &out_description, &out_metrics));
if (!result)
return 0; // Failure creating font.
linked_ptr<Font> object(new Font);
out_description.SetToPPFontDescription(dispatcher, object->desc_ptr(), true);
// Convert the metrics, this is just serialized as a string of bytes.
if (out_metrics.size() != sizeof(PP_FontMetrics_Dev))
return 0;
memcpy(&object->metrics(), out_metrics.data(), sizeof(PP_FontMetrics_Dev));
dispatcher->plugin_resource_tracker()->AddResource(result, object);
return result;
}
PP_Bool IsFont(PP_Resource resource) {
Font* object = PluginResource::GetAs<Font>(resource);
return BoolToPPBool(!!object);
}
PP_Bool Describe(PP_Resource font_id,
PP_FontDescription_Dev* description,
PP_FontMetrics_Dev* metrics) {
Font* object = PluginResource::GetAs<Font>(font_id);
if (!object)
return PP_FALSE;
// Copy the description, the caller expects its face PP_Var to have a ref
// added to it on its behalf.
memcpy(description, &object->desc(), sizeof(PP_FontDescription_Dev));
PluginDispatcher::Get()->plugin_var_tracker()->AddRef(description->face);
memcpy(metrics, &object->metrics(), sizeof(PP_FontMetrics_Dev));
return PP_TRUE;
}
PP_Bool DrawTextAt(PP_Resource font_id,
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) {
PPBFont_DrawTextAt_Params params;
params.font = font_id;
params.image_data = image_data;
params.text_is_rtl = text->rtl;
params.override_direction = text->override_direction;
params.position = *position;
params.color = color;
if (clip) {
params.clip = *clip;
params.clip_is_null = false;
} else {
params.clip = PP_MakeRectFromXYWH(0, 0, 0, 0);
params.clip_is_null = true;
}
params.image_data_is_opaque = image_data_is_opaque;
Dispatcher* dispatcher = PluginDispatcher::Get();
PP_Bool result = PP_FALSE;
dispatcher->Send(new PpapiHostMsg_PPBFont_DrawTextAt(
INTERFACE_ID_PPB_FONT,
SerializedVarSendInput(dispatcher, text->text),
params, &result));
return result;
}
int32_t MeasureText(PP_Resource font_id, const PP_TextRun_Dev* text) {
Dispatcher* dispatcher = PluginDispatcher::Get();
int32_t result = 0;
dispatcher->Send(new PpapiHostMsg_PPBFont_MeasureText(
INTERFACE_ID_PPB_FONT, font_id,
SerializedVarSendInput(dispatcher, text->text),
text->rtl, text->override_direction, &result));
return result;
}
uint32_t CharacterOffsetForPixel(PP_Resource font_id,
const PP_TextRun_Dev* text,
int32_t pixel_position) {
Dispatcher* dispatcher = PluginDispatcher::Get();
uint32_t result = 0;
dispatcher->Send(new PpapiHostMsg_PPBFont_CharacterOffsetForPixel(
INTERFACE_ID_PPB_FONT, font_id,
SerializedVarSendInput(dispatcher, text->text),
text->rtl, text->override_direction, pixel_position, &result));
return result;
}
int32_t PixelOffsetForCharacter(PP_Resource font_id,
const PP_TextRun_Dev* text,
uint32_t char_offset) {
Dispatcher* dispatcher = PluginDispatcher::Get();
int32_t result = 0;
dispatcher->Send(new PpapiHostMsg_PPBFont_PixelOffsetForCharacter(
INTERFACE_ID_PPB_FONT, font_id,
SerializedVarSendInput(dispatcher, text->text),
text->rtl, text->override_direction, char_offset, &result));
return result;
}
const PPB_Font_Dev ppb_font_interface = {
&Create,
&IsFont,
&Describe,
&DrawTextAt,
&MeasureText,
&CharacterOffsetForPixel,
&PixelOffsetForCharacter
};
} // namespace
PPB_Font_Proxy::PPB_Font_Proxy(Dispatcher* dispatcher,
const void* target_interface)
: InterfaceProxy(dispatcher, target_interface) {
}
PPB_Font_Proxy::~PPB_Font_Proxy() {
}
const void* PPB_Font_Proxy::GetSourceInterface() const {
return &ppb_font_interface;
}
InterfaceID PPB_Font_Proxy::GetInterfaceId() const {
return INTERFACE_ID_PPB_FONT;
}
bool PPB_Font_Proxy::OnMessageReceived(const IPC::Message& msg) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PPB_Font_Proxy, msg)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_Create,
OnMsgCreate)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_DrawTextAt,
OnMsgDrawTextAt)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_MeasureText,
OnMsgMeasureText)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_CharacterOffsetForPixel,
OnMsgCharacterOffsetForPixel)
IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFont_PixelOffsetForCharacter,
OnMsgPixelOffsetForCharacter)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void PPB_Font_Proxy::OnMsgCreate(
PP_Module pp_module,
const SerializedFontDescription& in_description,
PP_Resource* result,
SerializedFontDescription* out_description,
std::string* out_metrics) {
// Convert the face name in the input description.
PP_FontDescription_Dev in_pp_desc;
in_description.SetToPPFontDescription(dispatcher(), &in_pp_desc, false);
// Make sure the output is always defined so we can still serialize it back
// to the plugin below.
PP_FontDescription_Dev out_pp_desc;
memset(&out_pp_desc, 0, sizeof(PP_FontDescription_Dev));
out_pp_desc.face = PP_MakeUndefined();
*result = ppb_font_target()->Create(pp_module, &in_pp_desc);
if (*result) {
// Get the metrics and resulting description to return to the browser.
PP_FontMetrics_Dev metrics;
if (ppb_font_target()->Describe(*result, &out_pp_desc, &metrics)) {
out_metrics->assign(reinterpret_cast<const char*>(&metrics),
sizeof(PP_FontMetrics_Dev));
}
}
// This must always get called or it will assert when trying to serialize
// the un-filled-in SerializedFontDescription as the return value.
out_description->SetFromPPFontDescription(dispatcher(), out_pp_desc, false);
}
void PPB_Font_Proxy::OnMsgDrawTextAt(SerializedVarReceiveInput text,
const PPBFont_DrawTextAt_Params& params,
PP_Bool* result) {
PP_TextRun_Dev run;
run.text = text.Get(dispatcher());
run.rtl = params.text_is_rtl;
run.override_direction = params.override_direction;
*result = ppb_font_target()->DrawTextAt(params.font, params.image_data,
&run, &params.position, params.color,
params.clip_is_null ? NULL : &params.clip, params.image_data_is_opaque);
}
void PPB_Font_Proxy::OnMsgMeasureText(PP_Resource font,
SerializedVarReceiveInput text,
PP_Bool text_is_rtl,
PP_Bool override_direction,
int32_t* result) {
PP_TextRun_Dev run;
run.text = text.Get(dispatcher());
run.rtl = text_is_rtl;
run.override_direction = override_direction;
*result = ppb_font_target()->MeasureText(font, &run);
}
void PPB_Font_Proxy::OnMsgCharacterOffsetForPixel(
PP_Resource font,
SerializedVarReceiveInput text,
PP_Bool text_is_rtl,
PP_Bool override_direction,
int32_t pixel_pos,
uint32_t* result) {
PP_TextRun_Dev run;
run.text = text.Get(dispatcher());
run.rtl = text_is_rtl;
run.override_direction = override_direction;
*result = ppb_font_target()->CharacterOffsetForPixel(font, &run, pixel_pos);
}
void PPB_Font_Proxy::OnMsgPixelOffsetForCharacter(
PP_Resource font,
SerializedVarReceiveInput text,
PP_Bool text_is_rtl,
PP_Bool override_direction,
uint32_t char_offset,
int32_t* result) {
PP_TextRun_Dev run;
run.text = text.Get(dispatcher());
run.rtl = text_is_rtl;
run.override_direction = override_direction;
*result = ppb_font_target()->PixelOffsetForCharacter(font, &run, char_offset);
}
} // namespace proxy
} // namespace pp