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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup GHOST
* Declaration of GHOST_SystemWin32 class.
*/
#pragma once
#ifndef WIN32
# error WIN32 only!
#endif // WIN32
#define WIN32_LEAN_AND_MEAN
#include <ole2.h> // for drag-n-drop
#include <windows.h>
#include "GHOST_System.h"
class GHOST_EventButton;
class GHOST_EventCursor;
class GHOST_EventKey;
class GHOST_EventWheel;
class GHOST_EventWindow;
class GHOST_EventDragnDrop;
class GHOST_ContextD3D;
class GHOST_WindowWin32;
/**
* WIN32 Implementation of GHOST_System class.
* \see GHOST_System.
*/
class GHOST_SystemWin32 : public GHOST_System {
public:
/**
* Constructor.
*/
GHOST_SystemWin32();
/**
* Destructor.
*/
~GHOST_SystemWin32();
/***************************************************************************************
** Time(r) functionality
***************************************************************************************/
GHOST_TUns64 millisSinceStart(__int64 ms) const;
/**
* This method converts performance counter measurements into milliseconds since the start of the
* system process.
* \return The number of milliseconds since the start of the system process.
*/
GHOST_TUns64 performanceCounterToMillis(__int64 perf_ticks) const;
/**
* This method converts system ticks into milliseconds since the start of the
* system process.
* \return The number of milliseconds since the start of the system process.
*/
GHOST_TUns64 tickCountToMillis(__int64 ticks) const;
/**
* Returns the system time.
* Returns the number of milliseconds since the start of the system process.
* This overloaded method uses the high frequency timer if available.
* \return The number of milliseconds.
*/
GHOST_TUns64 getMilliSeconds() const;
/***************************************************************************************
** Display/window management functionality
***************************************************************************************/
/**
* Returns the number of displays on this system.
* \return The number of displays.
*/
GHOST_TUns8 getNumDisplays() const;
/**
* Returns the dimensions of the main display on this system.
* \return The dimension of the main display.
*/
void getMainDisplayDimensions(GHOST_TUns32 &width, GHOST_TUns32 &height) const;
/**
* Returns the dimensions of all displays on this system.
* \return The dimension of the main display.
*/
void getAllDisplayDimensions(GHOST_TUns32 &width, GHOST_TUns32 &height) const;
/**
* Create a new window.
* The new window is added to the list of windows managed.
* Never explicitly delete the window, use disposeWindow() instead.
* \param title The name of the window
* (displayed in the title bar of the window if the OS supports it).
* \param left The coordinate of the left edge of the window.
* \param top The coordinate of the top edge of the window.
* \param width The width the window.
* \param height The height the window.
* \param state The state of the window when opened.
* \param type The type of drawing context installed in this window.
* \param glSettings: Misc OpenGL settings.
* \param exclusive: Use to show the window ontop and ignore others (used fullscreen).
* \param parentWindow Parent window
* \return The new window (or 0 if creation failed).
*/
GHOST_IWindow *createWindow(const char *title,
GHOST_TInt32 left,
GHOST_TInt32 top,
GHOST_TUns32 width,
GHOST_TUns32 height,
GHOST_TWindowState state,
GHOST_TDrawingContextType type,
GHOST_GLSettings glSettings,
const bool exclusive = false,
const bool is_dialog = false,
const GHOST_IWindow *parentWindow = 0);
/**
* Create a new offscreen context.
* Never explicitly delete the window, use disposeContext() instead.
* \return The new context (or 0 if creation failed).
*/
GHOST_IContext *createOffscreenContext(GHOST_GLSettings glSettings);
/**
* Dispose of a context.
* \param context Pointer to the context to be disposed.
* \return Indication of success.
*/
GHOST_TSuccess disposeContext(GHOST_IContext *context);
/**
* Create a new offscreen DirectX context.
* Never explicitly delete the context, use disposeContext() instead.
* This is for GHOST internal, Win32 specific use, so it can be called statically.
*
* \return The new context (or 0 if creation failed).
*/
static GHOST_ContextD3D *createOffscreenContextD3D();
/**
* Dispose of a DirectX context.
* This is for GHOST internal, Win32 specific use, so it can be called statically.
* \param context Pointer to the context to be disposed.
* \return Indication of success.
*/
static GHOST_TSuccess disposeContextD3D(GHOST_ContextD3D *context);
/***************************************************************************************
** Event management functionality
***************************************************************************************/
/**
* Gets events from the system and stores them in the queue.
* \param waitForEvent Flag to wait for an event (or return immediately).
* \return Indication of the presence of events.
*/
bool processEvents(bool waitForEvent);
/***************************************************************************************
** Cursor management functionality
***************************************************************************************/
/**
* Returns the current location of the cursor (location in screen coordinates)
* \param x The x-coordinate of the cursor.
* \param y The y-coordinate of the cursor.
* \return Indication of success.
*/
GHOST_TSuccess getCursorPosition(GHOST_TInt32 &x, GHOST_TInt32 &y) const;
/**
* Updates the location of the cursor (location in screen coordinates).
* \param x The x-coordinate of the cursor.
* \param y The y-coordinate of the cursor.
* \return Indication of success.
*/
GHOST_TSuccess setCursorPosition(GHOST_TInt32 x, GHOST_TInt32 y);
/***************************************************************************************
** Access to mouse button and keyboard states.
***************************************************************************************/
/**
* Returns the state of all modifier keys.
* \param keys The state of all modifier keys (true == pressed).
* \return Indication of success.
*/
GHOST_TSuccess getModifierKeys(GHOST_ModifierKeys &keys) const;
/**
* Returns the state of the mouse buttons (outside the message queue).
* \param buttons The state of the buttons.
* \return Indication of success.
*/
GHOST_TSuccess getButtons(GHOST_Buttons &buttons) const;
/**
* Returns unsigned char from CUT_BUFFER0
* \param selection Used by X11 only
* \return Returns the Clipboard
*/
GHOST_TUns8 *getClipboard(bool selection) const;
/**
* Puts buffer to system clipboard
* \param selection Used by X11 only
* \return No return
*/
void putClipboard(GHOST_TInt8 *buffer, bool selection) const;
/**
* Show a system message box
* \param title The title of the message box
* \param message The message to display
* \param help_label Help button label
* \param continue_label Continue button label
* \param link An optional hyperlink
* \param dialog_options Options how to display the message
*/
GHOST_TSuccess showMessageBox(const char *title,
const char *message,
const char *help_label,
const char *continue_label,
const char *link,
GHOST_DialogOptions dialog_options) const;
/**
* Creates a drag'n'drop event and pushes it immediately onto the event queue.
* Called by GHOST_DropTargetWin32 class.
* \param eventType: The type of drag'n'drop event
* \param draggedObjectType: The type object concerned
* (currently array of file names, string, ?bitmap)
* \param mouseX: x mouse coordinate (in window coordinates)
* \param mouseY: y mouse coordinate
* \param window: The window on which the event occurred
* \return Indication whether the event was handled.
*/
static GHOST_TSuccess pushDragDropEvent(GHOST_TEventType eventType,
GHOST_TDragnDropTypes draggedObjectType,
GHOST_WindowWin32 *window,
int mouseX,
int mouseY,
void *data);
/***************************************************************************************
** Modify tablet API
***************************************************************************************/
/**
* Set which tablet API to use.
* \param api Enum indicating which API to use.
*/
void setTabletAPI(GHOST_TTabletAPI api) override;
protected:
/**
* Initializes the system.
* For now, it just registers the window class (WNDCLASS).
* \return A success value.
*/
GHOST_TSuccess init();
/**
* Closes the system down.
* \return A success value.
*/
GHOST_TSuccess exit();
/**
* Converts raw WIN32 key codes from the wndproc to GHOST keys.
* \param vKey The virtual key from hardKey
* \param ScanCode The ScanCode of pressed key (similar to PS/2 Set 1)
* \param extend Flag if key is not primly (left or right)
* \return The GHOST key (GHOST_kKeyUnknown if no match).
*/
GHOST_TKey convertKey(short vKey, short ScanCode, short extend) const;
/**
* Catches raw WIN32 key codes from WM_INPUT in the wndproc.
* \param raw RawInput structure with detailed info about the key event
* \param keyDown Pointer flag that specify if a key is down
* \param vk Pointer to virtual key
* \return The GHOST key (GHOST_kKeyUnknown if no match).
*/
GHOST_TKey hardKey(RAWINPUT const &raw, bool *r_keyDown, bool *r_is_repeated_modifier);
/**
* Creates mouse button event.
* \param type The type of event to create.
* \param window The window receiving the event (the active window).
* \param mask The button mask of this event.
* \return The event created.
*/
static GHOST_EventButton *processButtonEvent(GHOST_TEventType type,
GHOST_WindowWin32 *window,
GHOST_TButtonMask mask);
/**
* Creates tablet events from Wintab events.
* \param type The type of pointer event.
* \param window The window receiving the event (the active window).
* \param mask The button mask of the calling event.
* \param mousePressed Whether the mouse is currently pressed.
* \return True if the method handled the event.
*/
static GHOST_TSuccess processWintabEvent(GHOST_TEventType type,
GHOST_WindowWin32 *window,
GHOST_TButtonMask mask,
bool mousePressed);
/**
* Creates tablet events from pointer events.
* \param type The type of pointer event.
* \param window The window receiving the event (the active window).
* \param wParam The wParam from the wndproc.
* \param lParam The lParam from the wndproc.
* \param eventhandled True if the method handled the event.
*/
static void processPointerEvent(
UINT type, GHOST_WindowWin32 *window, WPARAM wParam, LPARAM lParam, bool &eventhandled);
/**
* Creates cursor event.
* \param window The window receiving the event (the active window).
* \return The event created.
*/
static GHOST_EventCursor *processCursorEvent(GHOST_WindowWin32 *window);
/**
* Handles a mouse wheel event.
* \param window The window receiving the event (the active window).
* \param wParam The wParam from the wndproc
* \param lParam The lParam from the wndproc
*/
static void processWheelEvent(GHOST_WindowWin32 *window, WPARAM wParam, LPARAM lParam);
/**
* Creates a key event and updates the key data stored locally (m_modifierKeys).
* In most cases this is a straightforward conversion of key codes.
* For the modifier keys however, we want to distinguish left and right keys.
* \param window The window receiving the event (the active window).
* \param raw RawInput structure with detailed info about the key event
*/
static GHOST_EventKey *processKeyEvent(GHOST_WindowWin32 *window, RAWINPUT const &raw);
/**
* Process special keys (VK_OEM_*), to see if current key layout
* gives us anything special, like ! on french AZERTY.
* \param vKey The virtual key from hardKey
* \param scanCode The ScanCode of pressed key (similar to PS/2 Set 1)
*/
GHOST_TKey processSpecialKey(short vKey, short scanCode) const;
/**
* Creates a window event.
* \param type The type of event to create.
* \param window The window receiving the event (the active window).
* \return The event created.
*/
static GHOST_Event *processWindowEvent(GHOST_TEventType type, GHOST_WindowWin32 *window);
#ifdef WITH_INPUT_IME
/**
* Creates a IME event.
* \param type The type of event to create.
* \param window The window receiving the event (the active window).
* \param data IME data.
* \return The event created.
*/
static GHOST_Event *processImeEvent(GHOST_TEventType type,
GHOST_WindowWin32 *window,
GHOST_TEventImeData *data);
#endif // WITH_INPUT_IME
/**
* Handles minimum window size.
* \param minmax The MINMAXINFO structure.
*/
static void processMinMaxInfo(MINMAXINFO *minmax);
#ifdef WITH_INPUT_NDOF
/**
* Handles Motion and Button events from a SpaceNavigator or related device.
* Instead of returning an event object, this function communicates directly
* with the GHOST_NDOFManager.
* \param raw RawInput structure with detailed info about the NDOF event
* \return Whether an event was generated and sent.
*/
bool processNDOF(RAWINPUT const &raw);
#endif
/**
* Returns the local state of the modifier keys (from the message queue).
* \param keys The state of the keys.
*/
inline void retrieveModifierKeys(GHOST_ModifierKeys &keys) const;
/**
* Stores the state of the modifier keys locally.
* For internal use only!
* param keys The new state of the modifier keys.
*/
inline void storeModifierKeys(const GHOST_ModifierKeys &keys);
/**
* Check current key layout for AltGr
*/
inline void handleKeyboardChange(void);
/**
* Windows call back routine for our window class.
*/
static LRESULT WINAPI s_wndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
/**
* Toggles console
* \param action
* - 0 - Hides
* - 1 - Shows
* - 2 - Toggles
* - 3 - Hides if it runs not from command line
* - * - Does nothing
* \return current status (1 -visible, 0 - hidden)
*/
int toggleConsole(int action);
/** The current state of the modifier keys. */
GHOST_ModifierKeys m_modifierKeys;
/** The virtual-key code (VKey) of the last press event. Used to detect repeat events. */
unsigned short m_keycode_last_repeat_key;
/** State variable set at initialization. */
bool m_hasPerformanceCounter;
/** High frequency timer variable. */
__int64 m_freq;
/** High frequency timer variable. */
__int64 m_start;
/** Low frequency timer variable. */
__int64 m_lfstart;
/** AltGr on current keyboard layout. */
bool m_hasAltGr;
/** language identifier. */
WORD m_langId;
/** stores keyboard layout. */
HKL m_keylayout;
/** Console status */
int m_consoleStatus;
/** Wheel delta accumulator */
int m_wheelDeltaAccum;
};
inline void GHOST_SystemWin32::retrieveModifierKeys(GHOST_ModifierKeys &keys) const
{
keys = m_modifierKeys;
}
inline void GHOST_SystemWin32::storeModifierKeys(const GHOST_ModifierKeys &keys)
{
m_modifierKeys = keys;
}
inline void GHOST_SystemWin32::handleKeyboardChange(void)
{
m_keylayout = GetKeyboardLayout(0); // get keylayout for current thread
int i;
SHORT s;
// save the language identifier.
m_langId = LOWORD(m_keylayout);
for (m_hasAltGr = false, i = 32; i < 256; ++i) {
s = VkKeyScanEx((char)i, m_keylayout);
// s == -1 means no key that translates passed char code
// high byte contains shift state. bit 2 ctrl pressed, bit 4 alt pressed
// if both are pressed, we have AltGr keycombo on keylayout
if (s != -1 && (s & 0x600) == 0x600) {
m_hasAltGr = true;
break;
}
}
}
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