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754 lines (665 loc) · 20.9 KB
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2026 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef SDL_BWin_h_
#define SDL_BWin_h_
#ifdef __cplusplus
extern "C" {
#endif
#include "../../SDL_internal.h"
#include "SDL.h"
#include "SDL_syswm.h"
#include "SDL_bframebuffer.h"
#ifdef __cplusplus
}
#endif
#include <stdio.h>
#include <AppKit.h>
#include <Cursor.h>
#include <InterfaceKit.h>
#ifdef SDL_VIDEO_OPENGL
#include <opengl/GLView.h>
#endif
#include "SDL_events.h"
#include "../../main/haiku/SDL_BApp.h"
enum WinCommands
{
BWIN_MOVE_WINDOW,
BWIN_RESIZE_WINDOW,
BWIN_SHOW_WINDOW,
BWIN_HIDE_WINDOW,
BWIN_MAXIMIZE_WINDOW,
BWIN_MINIMIZE_WINDOW,
BWIN_RESTORE_WINDOW,
BWIN_SET_TITLE,
BWIN_SET_BORDERED,
BWIN_SET_RESIZABLE,
BWIN_FULLSCREEN,
BWIN_UPDATE_FRAMEBUFFER,
BWIN_MINIMUM_SIZE_WINDOW
};
// non-OpenGL framebuffer view
class SDL_BView : public BView
{
public:
SDL_BView(BRect frame, const char *name, uint32 resizingMode)
: BView(frame, name, resizingMode, B_WILL_DRAW),
fBitmap(NULL)
{
}
void Draw(BRect dirty)
{
if (fBitmap != NULL)
DrawBitmap(fBitmap, B_ORIGIN);
}
void SetBitmap(BBitmap *bitmap)
{
fBitmap = bitmap;
}
private:
BBitmap *fBitmap;
};
class SDL_BWin : public BWindow
{
public:
/* Constructor/Destructor */
SDL_BWin(BRect bounds, window_look look, uint32 flags)
: BWindow(bounds, "Untitled", look, B_NORMAL_WINDOW_FEEL, flags)
{
_last_buttons = 0;
_cur_view = NULL;
_SDL_View = NULL;
#ifdef SDL_VIDEO_OPENGL
_SDL_GLView = NULL;
_gl_type = 0;
#endif
_shown = false;
_inhibit_resize = false;
_mouse_focused = false;
_prev_frame = NULL;
_fullscreen = NULL;
/* Handle framebuffer stuff */
_buffer_locker = new BLocker();
_bitmap = NULL;
}
virtual ~SDL_BWin()
{
Lock();
if (_SDL_View != NULL && _SDL_View != _cur_view) {
delete _SDL_View;
_SDL_View = NULL;
}
#ifdef SDL_VIDEO_OPENGL
if (_SDL_GLView) {
if (SDL_Handler->GetCurrentContext() == _SDL_GLView)
SDL_Handler->SetCurrentContext(NULL);
if (_SDL_GLView == _cur_view)
RemoveChild(_SDL_GLView);
_SDL_GLView = NULL;
// _SDL_GLView deleted by HAIKU_GL_DeleteContext
}
#endif
Unlock();
delete _prev_frame;
/* Clean up framebuffer stuff */
_buffer_locker->Lock();
delete _buffer_locker;
}
void SetCurrentView(BView *view)
{
if (_cur_view != view) {
if (_cur_view != NULL)
RemoveChild(_cur_view);
_cur_view = view;
if (_cur_view != NULL)
AddChild(_cur_view);
}
}
void UpdateCurrentView()
{
if (_SDL_GLView != NULL) {
SetCurrentView(_SDL_GLView);
} else if (_SDL_View != NULL) {
SetCurrentView(_SDL_View);
} else {
SetCurrentView(NULL);
}
}
SDL_BView *CreateView()
{
Lock();
if (_SDL_View == NULL) {
_SDL_View = new SDL_BView(Bounds(), "SDL View", B_FOLLOW_ALL_SIDES);
UpdateCurrentView();
}
Unlock();
return _SDL_View;
}
void RemoveView()
{
Lock();
if (_SDL_View != NULL) {
SDL_BView *oldView = _SDL_View;
_SDL_View = NULL;
UpdateCurrentView();
delete oldView;
}
Unlock();
}
/* * * * * OpenGL functionality * * * * */
#ifdef SDL_VIDEO_OPENGL
BGLView *CreateGLView(Uint32 gl_flags)
{
Lock();
if (_SDL_GLView == NULL) {
_SDL_GLView = new BGLView(Bounds(), "SDL GLView",
B_FOLLOW_ALL_SIDES,
(B_WILL_DRAW | B_FRAME_EVENTS),
gl_flags);
_gl_type = gl_flags;
UpdateCurrentView();
}
Unlock();
return _SDL_GLView;
}
void RemoveGLView()
{
Lock();
if (_SDL_GLView != NULL) {
if (SDL_Handler->GetCurrentContext() == _SDL_GLView)
SDL_Handler->SetCurrentContext(NULL);
_SDL_GLView = NULL;
UpdateCurrentView();
// _SDL_GLView deleted by HAIKU_GL_DeleteContext
}
Unlock();
}
void SwapBuffers(void)
{
_SDL_GLView->SwapBuffers();
}
#endif
/* * * * * Event sending * * * * */
/* Hook functions */
virtual void FrameMoved(BPoint origin)
{
/* Post a message to the BApp so that it can handle the window event */
BMessage msg(BAPP_WINDOW_MOVED);
msg.AddInt32("window-x", (int)origin.x);
msg.AddInt32("window-y", (int)origin.y);
_PostWindowEvent(msg);
/* Perform normal hook operations */
BWindow::FrameMoved(origin);
}
void FrameResized(float width, float height)
{
/* Post a message to the BApp so that it can handle the window event */
BMessage msg(BAPP_WINDOW_RESIZED);
msg.AddInt32("window-w", (int)width + 1);
msg.AddInt32("window-h", (int)height + 1);
_PostWindowEvent(msg);
/* Perform normal hook operations */
BWindow::FrameResized(width, height);
}
bool QuitRequested()
{
BMessage msg(BAPP_WINDOW_CLOSE_REQUESTED);
_PostWindowEvent(msg);
/* We won't allow a quit unless asked by DestroyWindow() */
return false;
}
void WindowActivated(bool active)
{
BMessage msg(BAPP_KEYBOARD_FOCUS); /* Mouse focus sold separately */
msg.AddBool("focusGained", active);
_PostWindowEvent(msg);
}
void Zoom(BPoint origin,
float width,
float height)
{
BMessage msg(BAPP_MAXIMIZE); /* Closest thing to maximization Haiku has */
_PostWindowEvent(msg);
/* Before the window zooms, record its size */
if (!_prev_frame)
_prev_frame = new BRect(Frame());
/* Perform normal hook operations */
BWindow::Zoom(origin, width, height);
}
/* Member functions */
void Show()
{
while (IsHidden()) {
BWindow::Show();
}
_shown = true;
BMessage msg(BAPP_SHOW);
_PostWindowEvent(msg);
}
void Hide()
{
BWindow::Hide();
_shown = false;
BMessage msg(BAPP_HIDE);
_PostWindowEvent(msg);
}
void Minimize(bool minimize)
{
BWindow::Minimize(minimize);
int32 minState = (minimize ? BAPP_MINIMIZE : BAPP_RESTORE);
BMessage msg(minState);
_PostWindowEvent(msg);
}
void ScreenChanged(BRect screenFrame, color_space depth)
{
if (_fullscreen) {
MoveTo(screenFrame.left, screenFrame.top);
ResizeTo(screenFrame.Width(), screenFrame.Height());
}
}
/* BView message interruption */
void DispatchMessage(BMessage *msg, BHandler *target)
{
BPoint where; /* Used by mouse moved */
int32 buttons; /* Used for mouse button events */
int32 key; /* Used for key events */
switch (msg->what) {
case B_MOUSE_MOVED:
int32 transit;
if (msg->FindPoint("where", &where) == B_OK && msg->FindInt32("be:transit", &transit) == B_OK) {
_MouseMotionEvent(where, transit);
}
break;
case B_MOUSE_DOWN:
if (msg->FindInt32("buttons", &buttons) == B_OK) {
_MouseButtonEvent(buttons, SDL_PRESSED);
}
break;
case B_MOUSE_UP:
if (msg->FindInt32("buttons", &buttons) == B_OK) {
_MouseButtonEvent(buttons, SDL_RELEASED);
}
break;
case B_MOUSE_WHEEL_CHANGED:
float x, y;
if (msg->FindFloat("be:wheel_delta_x", &x) == B_OK && msg->FindFloat("be:wheel_delta_y", &y) == B_OK) {
_MouseWheelEvent((int)x, (int)y);
}
break;
case B_KEY_DOWN:
{
int32 i = 0;
int8 byte;
int8 bytes[4] = { 0, 0, 0, 0 };
while (i < 4 && msg->FindInt8("byte", i, &byte) == B_OK) {
bytes[i] = byte;
i++;
}
if (msg->FindInt32("key", &key) == B_OK) {
_KeyEvent((SDL_Scancode)key, &bytes[0], i, SDL_PRESSED);
}
} break;
case B_UNMAPPED_KEY_DOWN: /* modifier keys are unmapped */
if (msg->FindInt32("key", &key) == B_OK) {
_KeyEvent((SDL_Scancode)key, NULL, 0, SDL_PRESSED);
}
break;
case B_KEY_UP:
case B_UNMAPPED_KEY_UP: /* modifier keys are unmapped */
if (msg->FindInt32("key", &key) == B_OK) {
_KeyEvent(key, NULL, 0, SDL_RELEASED);
}
break;
default:
/* move it after switch{} so it's always handled
that way we keep Haiku features like:
- CTRL+Q to close window (and other shortcuts)
- PrintScreen to make screenshot into /boot/home
- etc.. */
/* BWindow::DispatchMessage(msg, target); */
break;
}
BWindow::DispatchMessage(msg, target);
}
/* Handle command messages */
void MessageReceived(BMessage *message)
{
switch (message->what) {
/* Handle commands from SDL */
case BWIN_SET_TITLE:
_SetTitle(message);
break;
case BWIN_MOVE_WINDOW:
_MoveTo(message);
break;
case BWIN_RESIZE_WINDOW:
_ResizeTo(message);
break;
case BWIN_SET_BORDERED:
{
bool bEnabled;
if (message->FindBool("window-border", &bEnabled) == B_OK)
_SetBordered(bEnabled);
break;
}
case BWIN_SET_RESIZABLE:
{
bool bEnabled;
if (message->FindBool("window-resizable", &bEnabled) == B_OK)
_SetResizable(bEnabled);
break;
}
case BWIN_SHOW_WINDOW:
Show();
break;
case BWIN_HIDE_WINDOW:
Hide();
break;
case BWIN_MAXIMIZE_WINDOW:
BWindow::Zoom();
break;
case BWIN_MINIMIZE_WINDOW:
Minimize(true);
break;
case BWIN_RESTORE_WINDOW:
_Restore();
break;
case BWIN_FULLSCREEN:
{
bool fullscreen;
if (message->FindBool("fullscreen", &fullscreen) == B_OK)
_SetFullScreen(fullscreen);
break;
}
case BWIN_MINIMUM_SIZE_WINDOW:
_SetMinimumSize(message);
break;
case BWIN_UPDATE_FRAMEBUFFER:
{
BMessage *pendingMessage;
while ((pendingMessage = MessageQueue()->FindMessage(BWIN_UPDATE_FRAMEBUFFER, 0))) {
MessageQueue()->RemoveMessage(pendingMessage);
delete pendingMessage;
}
if (_bitmap != NULL) {
if (_SDL_View != NULL && _cur_view == _SDL_View)
_SDL_View->Draw(Bounds());
else if (_SDL_GLView != NULL && _cur_view == _SDL_GLView) {
_SDL_GLView->CopyPixelsIn(_bitmap, B_ORIGIN);
}
}
break;
}
default:
/* Perform normal message handling */
BWindow::MessageReceived(message);
break;
}
}
/* Accessor methods */
bool IsShown() { return _shown; }
int32 GetID() { return _id; }
BBitmap *GetBitmap() { return _bitmap; }
BView *GetCurView() { return _cur_view; }
SDL_BView *GetView() { return _SDL_View; }
#ifdef SDL_VIDEO_OPENGL
BGLView *GetGLView()
{
return _SDL_GLView;
}
Uint32 GetGLType() { return _gl_type; }
#endif
/* Setter methods */
void SetID(int32 id) { _id = id; }
void LockBuffer() { _buffer_locker->Lock(); }
void UnlockBuffer() { _buffer_locker->Unlock(); }
void SetBitmap(BBitmap *bitmap)
{
_bitmap = bitmap;
if (_SDL_View != NULL)
_SDL_View->SetBitmap(bitmap);
}
private:
/* Event redirection */
void _MouseMotionEvent(BPoint &where, int32 transit)
{
if (transit == B_EXITED_VIEW) {
/* Change mouse focus */
if (_mouse_focused) {
_MouseFocusEvent(false);
}
} else {
/* Change mouse focus */
if (!_mouse_focused) {
_MouseFocusEvent(true);
}
BMessage msg(BAPP_MOUSE_MOVED);
msg.AddInt32("x", (int)where.x);
msg.AddInt32("y", (int)where.y);
_PostWindowEvent(msg);
}
}
void _MouseFocusEvent(bool focusGained)
{
_mouse_focused = focusGained;
BMessage msg(BAPP_MOUSE_FOCUS);
msg.AddBool("focusGained", focusGained);
_PostWindowEvent(msg);
/* FIXME: Why were these here?
if false: be_app->SetCursor(B_HAND_CURSOR);
if true: SDL_SetCursor(NULL); */
}
void _MouseButtonEvent(int32 buttons, Uint8 state)
{
int32 buttonStateChange = buttons ^ _last_buttons;
if (buttonStateChange & B_PRIMARY_MOUSE_BUTTON) {
_SendMouseButton(SDL_BUTTON_LEFT, state);
}
if (buttonStateChange & B_SECONDARY_MOUSE_BUTTON) {
_SendMouseButton(SDL_BUTTON_RIGHT, state);
}
if (buttonStateChange & B_TERTIARY_MOUSE_BUTTON) {
_SendMouseButton(SDL_BUTTON_MIDDLE, state);
}
_last_buttons = buttons;
}
void _SendMouseButton(int32 button, int32 state)
{
BMessage msg(BAPP_MOUSE_BUTTON);
msg.AddInt32("button-id", button);
msg.AddInt32("button-state", state);
_PostWindowEvent(msg);
}
void _MouseWheelEvent(int32 x, int32 y)
{
/* Create a message to pass along to the BeApp thread */
BMessage msg(BAPP_MOUSE_WHEEL);
msg.AddInt32("xticks", x);
msg.AddInt32("yticks", y);
_PostWindowEvent(msg);
}
void _KeyEvent(int32 keyCode, const int8 *keyUtf8, const ssize_t &len, int32 keyState)
{
/* Create a message to pass along to the BeApp thread */
BMessage msg(BAPP_KEY);
msg.AddInt32("key-state", keyState);
msg.AddInt32("key-scancode", keyCode);
if (keyUtf8 != NULL) {
msg.AddData("key-utf8", B_INT8_TYPE, (const void *)keyUtf8, len);
}
be_app->PostMessage(&msg, SDL_Handler);
}
void _RepaintEvent()
{
/* Force a repaint: Call the SDL exposed event */
BMessage msg(BAPP_REPAINT);
_PostWindowEvent(msg);
}
void _PostWindowEvent(BMessage &msg)
{
msg.AddInt32("window-id", _id);
be_app->PostMessage(&msg, SDL_Handler);
}
/* Command methods (functions called upon by SDL) */
void _SetTitle(BMessage *msg)
{
const char *title;
if (
msg->FindString("window-title", &title) != B_OK) {
return;
}
SetTitle(title);
}
void _MoveTo(BMessage *msg)
{
int32 x, y;
if (
msg->FindInt32("window-x", &x) != B_OK ||
msg->FindInt32("window-y", &y) != B_OK) {
return;
}
if (_fullscreen)
_non_fullscreen_frame.OffsetTo(x, y);
else
MoveTo(x, y);
}
void _ResizeTo(BMessage *msg)
{
int32 w, h;
if (
msg->FindInt32("window-w", &w) != B_OK ||
msg->FindInt32("window-h", &h) != B_OK) {
return;
}
if (_fullscreen) {
_non_fullscreen_frame.right = _non_fullscreen_frame.left + w;
_non_fullscreen_frame.bottom = _non_fullscreen_frame.top + h;
} else
ResizeTo(w, h);
}
void _SetBordered(bool bEnabled)
{
if (_fullscreen)
_bordered = bEnabled;
else
SetLook(bEnabled ? B_TITLED_WINDOW_LOOK : B_NO_BORDER_WINDOW_LOOK);
}
void _SetResizable(bool bEnabled)
{
if (_fullscreen)
_resizable = bEnabled;
else {
if (bEnabled) {
SetFlags(Flags() & ~(B_NOT_RESIZABLE | B_NOT_ZOOMABLE));
} else {
SetFlags(Flags() | (B_NOT_RESIZABLE | B_NOT_ZOOMABLE));
}
}
}
void _SetMinimumSize(BMessage *msg)
{
float maxHeight;
float maxWidth;
float _;
int32 minHeight;
int32 minWidth;
// This is a bit convoluted, we only want to set the minimum not the maximum
// But there is no direct call to do that, so store the maximum size beforehand
GetSizeLimits(&_, &maxWidth, &_, &maxHeight);
if (msg->FindInt32("window-w", &minWidth) != B_OK)
return;
if (msg->FindInt32("window-h", &minHeight) != B_OK)
return;
SetSizeLimits((float)minWidth, maxWidth, (float)minHeight, maxHeight);
UpdateSizeLimits();
}
void _Restore()
{
if (IsMinimized()) {
Minimize(false);
} else if (IsHidden()) {
Show();
} else if (_fullscreen) {
} else if (_prev_frame != NULL) { /* Zoomed */
MoveTo(_prev_frame->left, _prev_frame->top);
ResizeTo(_prev_frame->Width(), _prev_frame->Height());
}
}
void _SetFullScreen(bool fullscreen)
{
if (fullscreen != _fullscreen) {
if (fullscreen) {
BScreen screen(this);
BRect screenFrame = screen.Frame();
printf("screen frame: ");
screenFrame.PrintToStream();
printf("\n");
_bordered = Look() != B_NO_BORDER_WINDOW_LOOK;
_resizable = !(Flags() & B_NOT_RESIZABLE);
_non_fullscreen_frame = Frame();
_SetBordered(false);
_SetResizable(false);
MoveTo(screenFrame.left, screenFrame.top);
ResizeTo(screenFrame.Width(), screenFrame.Height());
_fullscreen = fullscreen;
} else {
_fullscreen = fullscreen;
MoveTo(_non_fullscreen_frame.left, _non_fullscreen_frame.top);
ResizeTo(_non_fullscreen_frame.Width(), _non_fullscreen_frame.Height());
_SetBordered(_bordered);
_SetResizable(_resizable);
}
}
}
/* Members */
BView *_cur_view;
SDL_BView *_SDL_View;
#ifdef SDL_VIDEO_OPENGL
BGLView *_SDL_GLView;
Uint32 _gl_type;
#endif
int32 _last_buttons;
int32 _id; /* Window id used by SDL_BApp */
bool _mouse_focused; /* Does this window have mouse focus? */
bool _shown;
bool _inhibit_resize;
BRect *_prev_frame; /* Previous position and size of the window */
bool _fullscreen;
// valid only if fullscreen
BRect _non_fullscreen_frame;
bool _bordered;
bool _resizable;
/* Framebuffer members */
BLocker *_buffer_locker;
BBitmap *_bitmap;
};
/* FIXME:
* An explanation of framebuffer flags.
*
* _connected - Original variable used to let the drawing thread know
* when changes are being made to the other framebuffer
* members.
* _connection_disabled - Used to signal to the drawing thread that the window
* is closing, and the thread should exit.
* _buffer_created - True if the current buffer is valid
* _buffer_dirty - True if the window should be redrawn.
* _trash_window_buffer - True if the window buffer needs to be trashed partway
* through a draw cycle. Occurs when the previous
* buffer provided by DirectConnected() is invalidated.
*/
#endif /* SDL_BWin_h_ */
/* vi: set ts=4 sw=4 expandtab: */