/** Do palette animation and blit to the window. */
static void PaintWindow(HDC dc)
{
HDC dc2 = CreateCompatibleDC(dc);
HBITMAP old_bmp = (HBITMAP)SelectObject(dc2, _wnd.dib_sect);
HPALETTE old_palette = SelectPalette(dc, _wnd.gdi_palette, FALSE);
if (_cur_palette.count_dirty != 0) {
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
switch (blitter->UsePaletteAnimation()) {
case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:
UpdatePalette(dc2, _local_palette.first_dirty, _local_palette.count_dirty);
break;
case Blitter::PALETTE_ANIMATION_BLITTER:
blitter->PaletteAnimate(_local_palette);
break;
case Blitter::PALETTE_ANIMATION_NONE:
break;
default:
NOT_REACHED();
}
_cur_palette.count_dirty = 0;
}
BitBlt(dc, 0, 0, _wnd.width, _wnd.height, dc2, 0, 0, SRCCOPY);
SelectPalette(dc, old_palette, TRUE);
SelectObject(dc2, old_bmp);
DeleteDC(dc2);
}
/** Draw the chat message-box */
void NetworkDrawChatMessage()
{
Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
if (!_chatmessage_dirty) return;
/* First undraw if needed */
NetworkUndrawChatMessage();
if (_iconsole_mode == ICONSOLE_FULL) return;
/* Check if we have anything to draw at all */
uint count = GetChatMessageCount();
if (count == 0) return;
int x = _chatmsg_box.x;
int y = _screen.height - _chatmsg_box.y - _chatmsg_box.height;
int width = _chatmsg_box.width;
int height = _chatmsg_box.height;
if (y < 0) {
height = max(height + y, min(_chatmsg_box.height, _screen.height));
y = 0;
}
if (x + width >= _screen.width) {
width = _screen.width - x;
}
if (width <= 0 || height <= 0) return;
assert(blitter->BufferSize(width, height) <= (int)(_chatmsg_box.width * _chatmsg_box.height * blitter->GetBytesPerPixel()));
/* Make a copy of the screen as it is before painting (for undraw) */
blitter->CopyToBuffer(blitter->MoveTo(_screen.dst_ptr, x, y), _chatmessage_backup, width, height);
_cur_dpi = &_screen; // switch to _screen painting
/* Paint a half-transparent box behind the chat messages */
GfxFillRect(
_chatmsg_box.x,
_screen.height - _chatmsg_box.y - count * (FONT_HEIGHT_NORMAL + NETWORK_CHAT_LINE_SPACING) - 2,
_chatmsg_box.x + _chatmsg_box.width - 1,
_screen.height - _chatmsg_box.y - 2,
PALETTE_TO_TRANSPARENT, FILLRECT_RECOLOUR // black, but with some alpha for background
);
/* Paint the chat messages starting with the lowest at the bottom */
for (uint y = FONT_HEIGHT_NORMAL + NETWORK_CHAT_LINE_SPACING; count-- != 0; y += (FONT_HEIGHT_NORMAL + NETWORK_CHAT_LINE_SPACING)) {
DrawString(_chatmsg_box.x + 3, _chatmsg_box.x + _chatmsg_box.width - 1, _screen.height - _chatmsg_box.y - y + 1, _chatmsg_list[count].message, _chatmsg_list[count].colour);
}
/* Make sure the data is updated next flush */
_video_driver->MakeDirty(x, y, width, height);
_chatmessage_visible = true;
_chatmessage_dirty = false;
}
void
Sprite::render(BitmapCanvas& canvas)
{
// render the current frame at m_x,m_y
if(m_visible)
{
int frame = m_animations[m_currentAnimation][m_currentFrame];
if( m_frames[frame]->m_imgMask != NULL )
{
// we have a mask that we need to render first
Blitter bltMask ( *(m_frames[frame]->m_imgMask) );
bltMask.SetMode (SRCPAINT);
bltMask.SetDest (m_x, m_y);
bltMask.BlitTo (canvas);
Blitter blitFrame( *(m_frames[frame]->m_img) );
blitFrame.SetMode (SRCAND);
blitFrame.SetDest (m_x, m_y);
blitFrame.BlitTo(canvas);
}
else
{
// no mask, just render the frame
Blitter bltMask ( *(m_frames[frame]->m_img) );
bltMask.SetMode (SRCPAINT);
bltMask.SetDest (m_x, m_y);
bltMask.BlitTo (canvas);
}
}
}
/** Hide the chatbox */
void NetworkUndrawChatMessage()
{
/* Sometimes we also need to hide the cursor
* This is because both textmessage and the cursor take a shot of the
* screen before drawing.
* Now the textmessage takes his shot and paints his data before the cursor
* does, so in the shot of the cursor is the screen-data of the textmessage
* included when the cursor hangs somewhere over the textmessage. To
* avoid wrong repaints, we undraw the cursor in that case, and everything
* looks nicely ;)
* (and now hope this story above makes sense to you ;))
*/
if (_cursor.visible &&
_cursor.draw_pos.x + _cursor.draw_size.x >= _chatmsg_box.x &&
_cursor.draw_pos.x <= _chatmsg_box.x + _chatmsg_box.width &&
_cursor.draw_pos.y + _cursor.draw_size.y >= _screen.height - _chatmsg_box.y - _chatmsg_box.height &&
_cursor.draw_pos.y <= _screen.height - _chatmsg_box.y) {
UndrawMouseCursor();
}
if (_chatmessage_visible) {
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
int x = _chatmsg_box.x;
int y = _screen.height - _chatmsg_box.y - _chatmsg_box.height;
int width = _chatmsg_box.width;
int height = _chatmsg_box.height;
if (y < 0) {
height = max(height + y, min(_chatmsg_box.height, _screen.height));
y = 0;
}
if (x + width >= _screen.width) {
width = _screen.width - x;
}
if (width <= 0 || height <= 0) return;
_chatmessage_visible = false;
/* Put our 'shot' back to the screen */
blitter->CopyFromBuffer(blitter->MoveTo(_screen.dst_ptr, x, y), _chatmessage_backup, width, height);
/* And make sure it is updated next time */
_video_driver->MakeDirty(x, y, width, height);
_chatmessage_dirty = true;
}
}
/**
* Find the requested blitter and return his class.
* @param name the blitter to select.
* @post Sets the blitter so GetCurrentBlitter() returns it too.
*/
static Blitter *SelectBlitter(const char *name)
{
BlitterFactory *b = GetBlitterFactory(name);
if (b == nullptr) return nullptr;
Blitter *newb = b->CreateInstance();
delete *GetActiveBlitter();
*GetActiveBlitter() = newb;
DEBUG(driver, 1, "Successfully %s blitter '%s'", StrEmpty(name) ? "probed" : "loaded", newb->GetName());
return newb;
}
static void CheckPaletteAnim()
{
if (_cur_palette.count_dirty != 0) {
Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
switch (blitter->UsePaletteAnimation()) {
case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:
UpdatePalette();
break;
case Blitter::PALETTE_ANIMATION_BLITTER:
blitter->PaletteAnimate(_local_palette);
break;
case Blitter::PALETTE_ANIMATION_NONE:
break;
default:
NOT_REACHED();
}
_cur_palette.count_dirty = 0;
}
}
/**
* Find the requested blitter and return his class.
* @param name the blitter to select.
* @post Sets the blitter so GetCurrentBlitter() returns it too.
*/
static Blitter *SelectBlitter(const char *name)
{
BlitterFactory *b = GetBlitterFactory(name);
if (b == NULL) return NULL;
//用工厂生成一个Blitter
Blitter *newb = b->CreateInstance();
delete *GetActiveBlitter();
//得到的是双重地址,可以复制的.
*GetActiveBlitter() = newb;
DEBUG(driver, 1, "Successfully %s blitter '%s'", StrEmpty(name) ? "probed" : "loaded", newb->GetName());
return newb;
}
bool VideoDriver_SDL::CreateMainSurface(uint w, uint h)
{
SDL_Surface *newscreen, *icon;
char caption[50];
int bpp = BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth();
bool want_hwpalette;
GetAvailableVideoMode(&w, &h);
DEBUG(driver, 1, "SDL: using mode %ux%ux%d", w, h, bpp);
if (bpp == 0) usererror("Can't use a blitter that blits 0 bpp for normal visuals");
char icon_path[MAX_PATH];
if (FioFindFullPath(icon_path, lengthof(icon_path), BASESET_DIR, "openttd.32.bmp") != NULL) {
/* Give the application an icon */
icon = SDL_CALL SDL_LoadBMP(icon_path);
if (icon != NULL) {
/* Get the colourkey, which will be magenta */
uint32 rgbmap = SDL_CALL SDL_MapRGB(icon->format, 255, 0, 255);
SDL_CALL SDL_SetColorKey(icon, SDL_SRCCOLORKEY, rgbmap);
SDL_CALL SDL_WM_SetIcon(icon, NULL);
SDL_CALL SDL_FreeSurface(icon);
}
}
if (_use_hwpalette == 2) {
/* Default is to autodetect when to use SDL_HWPALETTE.
* In this case, SDL_HWPALETTE is only used for 8bpp
* blitters in fullscreen.
*
* When using an 8bpp blitter on a 8bpp system in
* windowed mode with SDL_HWPALETTE, OpenTTD will claim
* the system palette, making all other applications
* get the wrong colours. In this case, we're better of
* trying to approximate the colors we need using system
* colors, using a shadow surface (see below).
*
* On a 32bpp system, SDL_HWPALETTE is ignored, so it
* doesn't matter what we do.
*
* When using a 32bpp blitter on a 8bpp system, setting
* SDL_HWPALETTE messes up rendering (at least on X11),
* so we don't do that. In this case, SDL takes care of
* color approximation using its own shadow surface
* (which we can't force in 8bpp on 8bpp mode,
* unfortunately).
*/
want_hwpalette = (bpp == 8 && _fullscreen);
} else {
/* User specified a value manually */
want_hwpalette = _use_hwpalette;
}
if (want_hwpalette) DEBUG(driver, 1, "SDL: requesting hardware palete");
/* Free any previously allocated shadow surface */
if (_sdl_screen != NULL && _sdl_screen != _sdl_realscreen) SDL_CALL SDL_FreeSurface(_sdl_screen);
if (_sdl_realscreen != NULL) {
if (_requested_hwpalette != want_hwpalette) {
/* SDL (at least the X11 driver), reuses the
* same window and palette settings when the bpp
* (and a few flags) are the same. Since we need
* to hwpalette value to change (in particular
* when switching between fullscreen and
* windowed), we restart the entire video
* subsystem to force creating a new window.
*/
DEBUG(driver, 0, "SDL: Restarting SDL video subsystem, to force hwpalette change");
SDL_CALL SDL_QuitSubSystem(SDL_INIT_VIDEO);
SDL_CALL SDL_InitSubSystem(SDL_INIT_VIDEO);
ClaimMousePointer();
SetupKeyboard();
}
}
/* Remember if we wanted a hwpalette. We can't reliably query
* SDL for the SDL_HWPALETTE flag, since it might get set even
* though we didn't ask for it (when SDL creates a shadow
* surface, for example). */
_requested_hwpalette = want_hwpalette;
/* DO NOT CHANGE TO HWSURFACE, IT DOES NOT WORK */
newscreen = SDL_CALL SDL_SetVideoMode(w, h, bpp, SDL_SWSURFACE | (want_hwpalette ? SDL_HWPALETTE : 0) | (_fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE));
if (newscreen == NULL) {
DEBUG(driver, 0, "SDL: Couldn't allocate a window to draw on");
return false;
}
_sdl_realscreen = newscreen;
if (bpp == 8 && (_sdl_realscreen->flags & SDL_HWPALETTE) != SDL_HWPALETTE) {
/* Using an 8bpp blitter, if we didn't get a hardware
* palette (most likely because we didn't request one,
* see above), we'll have to set up a shadow surface to
* render on.
*
* Our palette will be applied to this shadow surface,
* while the real screen surface will use the shared
* system palette (which will partly contain our colors,
* but most likely will not have enough free color cells
* for all of our colors). SDL can use these two
* palettes at blit time to approximate colors used in
* the shadow surface using system colors automatically.
*
* Note that when using an 8bpp blitter on a 32bpp
* system, SDL will create an internal shadow surface.
* This shadow surface will have SDL_HWPALLETE set, so
* we won't create a second shadow surface in this case.
*/
DEBUG(driver, 1, "SDL: using shadow surface");
newscreen = SDL_CALL SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, bpp, 0, 0, 0, 0);
if (newscreen == NULL) {
DEBUG(driver, 0, "SDL: Couldn't allocate a shadow surface to draw on");
return false;
}
}
/* Delay drawing for this cycle; the next cycle will redraw the whole screen */
_num_dirty_rects = 0;
_screen.width = newscreen->w;
_screen.height = newscreen->h;
_screen.pitch = newscreen->pitch / (bpp / 8);
_screen.dst_ptr = newscreen->pixels;
_sdl_screen = newscreen;
/* When in full screen, we will always have the mouse cursor
* within the window, even though SDL does not give us the
* appropriate event to know this. */
if (_fullscreen) _cursor.in_window = true;
Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
blitter->PostResize();
InitPalette();
switch (blitter->UsePaletteAnimation()) {
case Blitter::PALETTE_ANIMATION_NONE:
case Blitter::PALETTE_ANIMATION_VIDEO_BACKEND:
UpdatePalette();
break;
case Blitter::PALETTE_ANIMATION_BLITTER:
if (_video_driver != NULL) blitter->PaletteAnimate(_local_palette);
break;
default:
NOT_REACHED();
}
snprintf(caption, sizeof(caption), "OpenTTD %s", _openttd_revision);
SDL_CALL SDL_WM_SetCaption(caption, caption);
GameSizeChanged();
return true;
}
/** Draw the chat message-box */
void NetworkDrawChatMessage()
{
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
if (!_chatmessage_dirty) return;
/* First undraw if needed */
NetworkUndrawChatMessage();
if (_iconsole_mode == ICONSOLE_FULL) return;
/* Check if we have anything to draw at all */
uint count = GetChatMessageCount();
if (count == 0) return;
int x = _chatmsg_box.x;
int y = _screen.height - _chatmsg_box.y - _chatmsg_box.height;
int width = _chatmsg_box.width;
int height = _chatmsg_box.height;
if (y < 0) {
height = max(height + y, min(_chatmsg_box.height, _screen.height));
y = 0;
}
if (x + width >= _screen.width) {
width = _screen.width - x;
}
if (width <= 0 || height <= 0) return;
assert(blitter->BufferSize(width, height) <= (int)(_chatmsg_box.width * _chatmsg_box.height * blitter->GetBytesPerPixel()));
/* Make a copy of the screen as it is before painting (for undraw) */
blitter->CopyToBuffer(blitter->MoveTo(_screen.dst_ptr, x, y), _chatmessage_backup, width, height);
_cur_dpi = &_screen; // switch to _screen painting
int string_height = 0;
for (uint i = 0; i < count; i++) {
SetDParamStr(0, _chatmsg_list[i].message);
string_height += GetStringLineCount(STR_JUST_RAW_STRING, width - 1) * FONT_HEIGHT_NORMAL + NETWORK_CHAT_LINE_SPACING;
}
string_height = min(string_height, MAX_CHAT_MESSAGES * (FONT_HEIGHT_NORMAL + NETWORK_CHAT_LINE_SPACING));
int top = _screen.height - _chatmsg_box.y - string_height - 2;
int bottom = _screen.height - _chatmsg_box.y - 2;
/* Paint a half-transparent box behind the chat messages */
GfxFillRect(_chatmsg_box.x, top - 2, _chatmsg_box.x + _chatmsg_box.width - 1, bottom,
PALETTE_TO_TRANSPARENT, FILLRECT_RECOLOUR // black, but with some alpha for background
);
/* Paint the chat messages starting with the lowest at the bottom */
int ypos = bottom - 2;
for (int i = count - 1; i >= 0; i--) {
ypos = DrawStringMultiLine(_chatmsg_box.x + 3, _chatmsg_box.x + _chatmsg_box.width - 1, top, ypos, _chatmsg_list[i].message, _chatmsg_list[i].colour, SA_LEFT | SA_BOTTOM | SA_FORCE) - NETWORK_CHAT_LINE_SPACING;
if (ypos < top) break;
}
/* Make sure the data is updated next flush */
_video_driver->MakeDirty(x, y, width, height);
_chatmessage_visible = true;
_chatmessage_dirty = false;
}
/**
* Callback of the screenshot generator that dumps the current video buffer.
* @see ScreenshotCallback
*/
static void CurrentScreenCallback(void *userdata, void *buf, uint y, uint pitch, uint n)
{
Blitter *blitter = BlitterFactoryBase::GetCurrentBlitter();
void *src = blitter->MoveTo(_screen.dst_ptr, 0, y);
blitter->CopyImageToBuffer(src, buf, _screen.width, n, pitch);
}
