blob: e875a4b1a329d0411c4406ba3c0ef1f5be97997c [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 <math.h>
#include <stdio.h> // FIXME(brettw) erase me.
#ifndef _WIN32
#include <sys/time.h>
#endif
#include <time.h>
#include <algorithm>
#include "ppapi/c/dev/ppp_printing_dev.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_input_event.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/cpp/dev/scriptable_object_deprecated.h"
#include "ppapi/cpp/graphics_2d.h"
#include "ppapi/cpp/image_data.h"
#include "ppapi/cpp/instance.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/url_loader.h"
#include "ppapi/cpp/url_request_info.h"
#include "ppapi/cpp/var.h"
static const int kStepsPerCircle = 800;
void FlushCallback(void* data, int32_t result);
void FillRect(pp::ImageData* image, int left, int top, int width, int height,
uint32_t color) {
for (int y = std::max(0, top);
y < std::min(image->size().height() - 1, top + height);
y++) {
for (int x = std::max(0, left);
x < std::min(image->size().width() - 1, left + width);
x++)
*image->GetAddr32(pp::Point(x, y)) = color;
}
}
class MyScriptableObject : public pp::deprecated::ScriptableObject {
public:
explicit MyScriptableObject(pp::Instance* instance) : instance_(instance) {}
virtual bool HasMethod(const pp::Var& method, pp::Var* exception) {
return method.AsString() == "toString";
}
virtual bool HasProperty(const pp::Var& name, pp::Var* exception) {
if (name.is_string() && name.AsString() == "blah")
return true;
return false;
}
virtual pp::Var GetProperty(const pp::Var& name, pp::Var* exception) {
if (name.is_string() && name.AsString() == "blah")
return pp::Var(instance_, new MyScriptableObject(instance_));
return pp::Var();
}
virtual void GetAllPropertyNames(std::vector<pp::Var>* names,
pp::Var* exception) {
names->push_back("blah");
}
virtual pp::Var Call(const pp::Var& method,
const std::vector<pp::Var>& args,
pp::Var* exception) {
if (method.AsString() == "toString")
return pp::Var("hello world");
return pp::Var();
}
private:
pp::Instance* instance_;
};
class MyFetcherClient {
public:
virtual void DidFetch(bool success, const std::string& data) = 0;
};
class MyFetcher {
public:
MyFetcher() : client_(NULL) {
callback_factory_.Initialize(this);
}
void Start(const pp::Instance& instance,
const pp::Var& url,
MyFetcherClient* client) {
pp::URLRequestInfo request;
request.SetURL(url);
request.SetMethod("GET");
loader_ = pp::URLLoader(instance);
client_ = client;
pp::CompletionCallback callback =
callback_factory_.NewCallback(&MyFetcher::DidOpen);
int rv = loader_.Open(request, callback);
if (rv != PP_ERROR_WOULDBLOCK)
callback.Run(rv);
}
void StartWithOpenedLoader(const pp::URLLoader& loader,
MyFetcherClient* client) {
loader_ = loader;
client_ = client;
ReadMore();
}
private:
void ReadMore() {
pp::CompletionCallback callback =
callback_factory_.NewCallback(&MyFetcher::DidRead);
int rv = loader_.ReadResponseBody(buf_, sizeof(buf_), callback);
if (rv != PP_ERROR_WOULDBLOCK)
callback.Run(rv);
}
void DidOpen(int32_t result) {
if (result == PP_OK) {
ReadMore();
} else {
DidFinish(result);
}
}
void DidRead(int32_t result) {
if (result > 0) {
data_.append(buf_, result);
ReadMore();
} else {
DidFinish(result);
}
}
void DidFinish(int32_t result) {
if (client_)
client_->DidFetch(result == PP_OK, data_);
}
pp::CompletionCallbackFactory<MyFetcher> callback_factory_;
pp::URLLoader loader_;
MyFetcherClient* client_;
char buf_[4096];
std::string data_;
};
class MyInstance : public pp::Instance, public MyFetcherClient {
public:
MyInstance(PP_Instance instance)
: pp::Instance(instance),
time_at_last_check_(0.0),
fetcher_(NULL),
width_(0),
height_(0),
animation_counter_(0),
print_settings_valid_(false) {}
virtual ~MyInstance() {
if (fetcher_) {
delete fetcher_;
fetcher_ = NULL;
}
}
virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]) {
return true;
}
virtual bool HandleDocumentLoad(const pp::URLLoader& loader) {
fetcher_ = new MyFetcher();
fetcher_->StartWithOpenedLoader(loader, this);
return true;
}
virtual bool HandleInputEvent(const PP_InputEvent& event) {
switch (event.type) {
case PP_INPUTEVENT_TYPE_MOUSEDOWN:
//SayHello();
return true;
case PP_INPUTEVENT_TYPE_MOUSEMOVE:
return true;
case PP_INPUTEVENT_TYPE_KEYDOWN:
return true;
default:
return false;
}
}
virtual pp::Var GetInstanceObject() {
return pp::Var(this, new MyScriptableObject(this));
}
pp::ImageData PaintImage(int width, int height) {
pp::ImageData image(this, PP_IMAGEDATAFORMAT_BGRA_PREMUL,
pp::Size(width, height), false);
if (image.is_null()) {
printf("Couldn't allocate the image data\n");
return image;
}
// Fill with semitransparent gradient.
for (int y = 0; y < image.size().height(); y++) {
char* row = &static_cast<char*>(image.data())[y * image.stride()];
for (int x = 0; x < image.size().width(); x++) {
row[x * 4 + 0] = y;
row[x * 4 + 1] = y;
row[x * 4 + 2] = 0;
row[x * 4 + 3] = y;
}
}
float radians = static_cast<float>(animation_counter_) / kStepsPerCircle *
2 * 3.14159265358979F;
float radius = static_cast<float>(std::min(width, height)) / 2.0f - 3.0f;
int x = static_cast<int>(cos(radians) * radius + radius + 2);
int y = static_cast<int>(sin(radians) * radius + radius + 2);
FillRect(&image, x - 3, y - 3, 7, 7, 0x80000000);
return image;
}
void Paint() {
pp::ImageData image = PaintImage(width_, height_);
if (!image.is_null()) {
device_context_.ReplaceContents(&image);
device_context_.Flush(pp::CompletionCallback(&FlushCallback, this));
}
}
virtual void DidChangeView(const pp::Rect& position, const pp::Rect& clip) {
if (position.size().width() == width_ &&
position.size().height() == height_)
return; // We don't care about the position, only the size.
width_ = position.size().width();
height_ = position.size().height();
device_context_ = pp::Graphics2D(this, pp::Size(width_, height_), false);
if (!BindGraphics(device_context_)) {
printf("Couldn't bind the device context\n");
return;
}
Paint();
}
void UpdateFps() {
// Time code doesn't currently compile on Windows, just skip FPS for now.
#ifndef _WIN32
pp::Var window = GetWindowObject();
pp::Var doc = window.GetProperty("document");
pp::Var fps = doc.Call("getElementById", "fps");
struct timeval tv;
struct timezone tz = {0, 0};
gettimeofday(&tv, &tz);
double time_now = tv.tv_sec + tv.tv_usec / 1000000.0;
if (animation_counter_ > 0) {
char fps_text[64];
sprintf(fps_text, "%g fps",
kStepsPerCircle / (time_now - time_at_last_check_));
fps.SetProperty("innerHTML", fps_text);
}
time_at_last_check_ = time_now;
#endif
}
// Print interfaces.
virtual PP_PrintOutputFormat_Dev* QuerySupportedPrintOutputFormats(
uint32_t* format_count) {
PP_PrintOutputFormat_Dev* format =
reinterpret_cast<PP_PrintOutputFormat_Dev*>(
pp::Module::Get()->core()->MemAlloc(
sizeof(PP_PrintOutputFormat_Dev)));
*format = PP_PRINTOUTPUTFORMAT_RASTER;
*format_count = 1;
return format;
}
virtual int32_t PrintBegin(const PP_PrintSettings_Dev& print_settings) {
if (print_settings_.format != PP_PRINTOUTPUTFORMAT_RASTER)
return 0;
print_settings_ = print_settings;
print_settings_valid_ = true;
return 1;
}
virtual pp::Resource PrintPages(
const PP_PrintPageNumberRange_Dev* page_ranges,
uint32_t page_range_count) {
if (!print_settings_valid_)
return pp::Resource();
if (page_range_count != 1)
return pp::Resource();
// Check if the page numbers are valid. We returned 1 in PrintBegin so we
// only have 1 page to print.
if (page_ranges[0].first_page_number || page_ranges[0].last_page_number) {
return pp::Resource();
}
int width = static_cast<int>(
(print_settings_.printable_area.size.width / 72.0) *
print_settings_.dpi);
int height = static_cast<int>(
(print_settings_.printable_area.size.height / 72.0) *
print_settings_.dpi);
return PaintImage(width, height);
}
virtual void PrintEnd() {
print_settings_valid_ = false;
}
void OnFlush() {
if (animation_counter_ % kStepsPerCircle == 0)
UpdateFps();
animation_counter_++;
Paint();
}
private:
void Log(const pp::Var& var) {
pp::Var doc = GetWindowObject().GetProperty("document");
if (console_.is_undefined()) {
pp::Var body = doc.GetProperty("body");
console_ = doc.Call("createElement", "pre");
console_.GetProperty("style").SetProperty("backgroundColor", "lightgray");
body.Call("appendChild", console_);
}
console_.Call("appendChild", doc.Call("createTextNode", var));
console_.Call("appendChild", doc.Call("createTextNode", "\n"));
}
void SayHello() {
pp::Var window = GetWindowObject();
pp::Var doc = window.GetProperty("document");
pp::Var body = doc.GetProperty("body");
pp::Var obj(this, new MyScriptableObject(this));
// Our object should have its toString method called.
Log("Testing MyScriptableObject::toString():");
Log(obj);
// body.appendChild(body) should throw an exception
Log("\nCalling body.appendChild(body):");
pp::Var exception;
body.Call("appendChild", body, &exception);
Log(exception);
Log("\nEnumeration of window properties:");
std::vector<pp::Var> props;
window.GetAllPropertyNames(&props);
for (size_t i = 0; i < props.size(); ++i)
Log(props[i]);
pp::Var location = window.GetProperty("location");
pp::Var href = location.GetProperty("href");
if (!fetcher_) {
fetcher_ = new MyFetcher();
fetcher_->Start(*this, href, this);
}
}
void DidFetch(bool success, const std::string& data) {
Log("\nDownloaded location.href:");
if (success) {
Log(data);
} else {
Log("Failed to download.");
}
delete fetcher_;
fetcher_ = NULL;
}
pp::Var console_;
pp::Graphics2D device_context_;
double time_at_last_check_;
MyFetcher* fetcher_;
int width_;
int height_;
// Incremented for each flush we get.
int animation_counter_;
bool print_settings_valid_;
PP_PrintSettings_Dev print_settings_;
};
void FlushCallback(void* data, int32_t result) {
static_cast<MyInstance*>(data)->OnFlush();
}
class MyModule : public pp::Module {
public:
MyModule() : pp::Module() {}
virtual ~MyModule() {}
virtual pp::Instance* CreateInstance(PP_Instance instance) {
return new MyInstance(instance);
}
};
namespace pp {
// Factory function for your specialization of the Module object.
Module* CreateModule() {
return new MyModule();
}
} // namespace pp