cef/cef1/tests/cefclient/uiplugin.cpp

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// Copyright (c) 2009 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2006-2008 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 "cefclient/uiplugin.h"
#if defined(OS_WIN)
#include <windows.h>
#include <gl/gl.h>
#include <sstream>
#include "include/cef_browser.h"
#include "include/cef_frame.h"
#include "cefclient/cefclient.h"
// Initialized in NP_Initialize.
NPNetscapeFuncs* g_uibrowser = NULL;
namespace {
// Global values.
float g_rotationspeed = 0.0f;
float g_theta = 0.0f;
// Class holding pointers for the client plugin window.
class ClientPlugin {
public:
ClientPlugin() {
hWnd = NULL;
hDC = NULL;
hRC = NULL;
}
HWND hWnd;
HDC hDC;
HGLRC hRC;
};
// Forward declarations of functions included in this code module:
LRESULT CALLBACK PluginWndProc(HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam);
void EnableOpenGL(HWND hWnd, HDC * hDC, HGLRC * hRC);
void DisableOpenGL(HWND hWnd, HDC hDC, HGLRC hRC);
NPError NPP_NewImpl(NPMIMEType plugin_type, NPP instance, uint16 mode,
int16 argc, char* argn[], char* argv[],
NPSavedData* saved) {
if (instance == NULL)
return NPERR_INVALID_INSTANCE_ERROR;
ClientPlugin* plugin = new ClientPlugin;
instance->pdata = reinterpret_cast<void*>(plugin);
return NPERR_NO_ERROR;
}
NPError NPP_DestroyImpl(NPP instance, NPSavedData** save) {
ClientPlugin* plugin = reinterpret_cast<ClientPlugin*>(instance->pdata);
if (plugin) {
if (plugin->hWnd) {
DestroyWindow(plugin->hWnd);
DisableOpenGL(plugin->hWnd, plugin->hDC, plugin->hRC);
}
delete plugin;
g_rotationspeed = 0.0f;
g_theta = 0.0f;
}
return NPERR_NO_ERROR;
}
NPError NPP_SetWindowImpl(NPP instance, NPWindow* window_info) {
if (instance == NULL)
return NPERR_INVALID_INSTANCE_ERROR;
if (window_info == NULL)
return NPERR_GENERIC_ERROR;
ClientPlugin* plugin = reinterpret_cast<ClientPlugin*>(instance->pdata);
HWND parent_hwnd = reinterpret_cast<HWND>(window_info->window);
if (plugin->hWnd == NULL) {
WNDCLASS wc;
HINSTANCE hInstance = GetModuleHandle(NULL);
// Register the window class.
wc.style = CS_OWNDC;
wc.lpfnWndProc = PluginWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = L"ClientUIPlugin";
RegisterClass(&wc);
// Create the main window.
plugin->hWnd = CreateWindow(L"ClientUIPlugin", L"Client UI Plugin",
WS_CHILD, 0, 0, 0, 0, parent_hwnd, NULL, hInstance, NULL);
SetWindowLongPtr(plugin->hWnd, GWLP_USERDATA,
reinterpret_cast<LONG_PTR>(plugin));
// Enable OpenGL drawing for the window.
EnableOpenGL(plugin->hWnd, &(plugin->hDC), &(plugin->hRC));
}
// Position the window and make sure it's visible.
RECT parent_rect;
GetClientRect(parent_hwnd, &parent_rect);
SetWindowPos(plugin->hWnd, NULL, parent_rect.left, parent_rect.top,
parent_rect.right - parent_rect.left,
parent_rect.bottom - parent_rect.top, SWP_SHOWWINDOW);
UpdateWindow(plugin->hWnd);
ShowWindow(plugin->hWnd, SW_SHOW);
return NPERR_NO_ERROR;
}
// Send the notification to the browser as a JavaScript function call.
static void NotifyNewRotation(float value) {
std::stringstream buf;
buf << "notifyNewRotation(" << value << ");";
AppGetBrowser()->GetMainFrame()->ExecuteJavaScript(buf.str(), CefString(),
0);
}
// Nice little fly polygon borrowed from the OpenGL Red Book.
const GLubyte fly[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x03, 0x80, 0x01, 0xC0, 0x06, 0xC0, 0x03, 0x60,
0x04, 0x60, 0x06, 0x20, 0x04, 0x30, 0x0C, 0x20,
0x04, 0x18, 0x18, 0x20, 0x04, 0x0C, 0x30, 0x20,
0x04, 0x06, 0x60, 0x20, 0x44, 0x03, 0xC0, 0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22,
0x44, 0x01, 0x80, 0x22, 0x44, 0x01, 0x80, 0x22,
0x66, 0x01, 0x80, 0x66, 0x33, 0x01, 0x80, 0xCC,
0x19, 0x81, 0x81, 0x98, 0x0C, 0xC1, 0x83, 0x30,
0x07, 0xe1, 0x87, 0xe0, 0x03, 0x3f, 0xfc, 0xc0,
0x03, 0x31, 0x8c, 0xc0, 0x03, 0x33, 0xcc, 0xc0,
0x06, 0x64, 0x26, 0x60, 0x0c, 0xcc, 0x33, 0x30,
0x18, 0xcc, 0x33, 0x18, 0x10, 0xc4, 0x23, 0x08,
0x10, 0x63, 0xC6, 0x08, 0x10, 0x30, 0x0c, 0x08,
0x10, 0x18, 0x18, 0x08, 0x10, 0x00, 0x00, 0x08};
// Plugin window procedure.
LRESULT CALLBACK PluginWndProc(HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam) {
ClientPlugin* plugin =
reinterpret_cast<ClientPlugin*>(GetWindowLongPtr(hWnd, GWLP_USERDATA));
switch (message) {
case WM_CREATE:
// Start the timer that's used for redrawing.
SetTimer(hWnd, 1, 1, NULL);
return 0;
case WM_DESTROY:
// Stop the timer that's used for redrawing.
KillTimer(hWnd, 1);
return 0;
case WM_LBUTTONDOWN:
// Decrement rotation speed.
ModifyRotation(-2.0f);
return 0;
case WM_RBUTTONDOWN:
// Increment rotation speed.
ModifyRotation(2.0f);
return 0;
case WM_SIZE:
if (plugin) {
// Resize the OpenGL viewport to match the window size.
int width = LOWORD(lParam);
int height = HIWORD(lParam);
wglMakeCurrent(plugin->hDC, plugin->hRC);
glViewport(0, 0, width, height);
}
break;
case WM_ERASEBKGND:
return 0;
case WM_TIMER:
wglMakeCurrent(plugin->hDC, plugin->hRC);
// Adjust the theta value and redraw the display when the timer fires.
glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glEnable(GL_POLYGON_STIPPLE);
glPolygonStipple(fly);
glRotatef(g_theta, 0.0f, 0.0f, 1.0f);
glBegin(GL_QUADS);
glColor3f(1.0f, 0.0f, 0.0f);
glVertex2f(0.7f, 0.7f);
glColor3f(0.0f, 1.0f, 0.0f);
glVertex2f(0.7f, -0.7f);
glColor3f(0.0f, 0.0f, 1.0f);
glVertex2f(-0.7f, -0.7f);
glColor3f(1.0f, 0.0f, 1.0f);
glVertex2f(-0.7f, 0.7f);
glEnd();
glDisable(GL_POLYGON_STIPPLE);
glPopMatrix();
SwapBuffers(plugin->hDC);
g_theta -= g_rotationspeed;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}
// Enable OpenGL.
void EnableOpenGL(HWND hWnd, HDC * hDC, HGLRC * hRC) {
PIXELFORMATDESCRIPTOR pfd;
int format;
// Get the device context.
*hDC = GetDC(hWnd);
// Set the pixel format for the DC.
ZeroMemory(&pfd, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 24;
pfd.cDepthBits = 16;
pfd.iLayerType = PFD_MAIN_PLANE;
format = ChoosePixelFormat(*hDC, &pfd);
SetPixelFormat(*hDC, format, &pfd);
// Create and enable the render contex.
*hRC = wglCreateContext(*hDC);
}
// Disable OpenGL.
void DisableOpenGL(HWND hWnd, HDC hDC, HGLRC hRC) {
wglMakeCurrent(NULL, NULL);
wglDeleteContext(hRC);
ReleaseDC(hWnd, hDC);
}
} // namespace
NPError API_CALL NP_UIGetEntryPoints(NPPluginFuncs* pFuncs) {
pFuncs->newp = NPP_NewImpl;
pFuncs->destroy = NPP_DestroyImpl;
pFuncs->setwindow = NPP_SetWindowImpl;
return NPERR_NO_ERROR;
}
NPError API_CALL NP_UIInitialize(NPNetscapeFuncs* pFuncs) {
g_uibrowser = pFuncs;
return NPERR_NO_ERROR;
}
NPError API_CALL NP_UIShutdown(void) {
g_uibrowser = NULL;
return NPERR_NO_ERROR;
}
void ModifyRotation(float value) {
g_rotationspeed += value;
NotifyNewRotation(g_rotationspeed);
}
void ResetRotation() {
g_rotationspeed = 0.0;
NotifyNewRotation(g_rotationspeed);
}
#endif // OS_WIN