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|
/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file win32_v.cpp Implementation of the Windows (GDI) video driver. */
#include "../stdafx.h"
#include "../openttd.h"
#include "../gfx_func.h"
#include "../os/windows/win32.h"
#include "../rev.h"
#include "../blitter/factory.hpp"
#include "../network/network.h"
#include "../core/geometry_func.hpp"
#include "../core/math_func.hpp"
#include "../core/random_func.hpp"
#include "../texteff.hpp"
#include "../thread.h"
#include "../progress.h"
#include "../window_gui.h"
#include "../window_func.h"
#include "../framerate_type.h"
#include "win32_v.h"
#include <windows.h>
#include <imm.h>
#include <mutex>
#include <condition_variable>
#include "../safeguards.h"
/* Missing define in MinGW headers. */
#ifndef MAPVK_VK_TO_CHAR
#define MAPVK_VK_TO_CHAR (2)
#endif
#ifndef PM_QS_INPUT
#define PM_QS_INPUT 0x20000
#endif
static struct {
HWND main_wnd; ///< Handle to system window.
HBITMAP dib_sect; ///< System bitmap object referencing our rendering buffer.
void *buffer_bits; ///< Internal rendering buffer.
HPALETTE gdi_palette; ///< Palette object for 8bpp blitter.
int width; ///< Width in pixels of our display surface.
int height; ///< Height in pixels of our display surface.
int width_org; ///< Original monitor resolution width, before we changed it.
int height_org; ///< Original monitor resolution height, before we changed it.
bool fullscreen; ///< Whether to use (true) fullscreen mode.
bool has_focus; ///< Does our window have system focus?
bool running; ///< Is the main loop running?
} _wnd;
bool _window_maximize;
static Dimension _bck_resolution;
DWORD _imm_props;
/** Whether the drawing is/may be done in a separate thread. */
static bool _draw_threaded;
/** Mutex to keep the access to the shared memory controlled. */
static std::recursive_mutex *_draw_mutex = nullptr;
/** Signal to draw the next frame. */
static std::condition_variable_any *_draw_signal = nullptr;
/** Should we keep continue drawing? */
static volatile bool _draw_continue;
/** Local copy of the palette for use in the drawing thread. */
static Palette _local_palette;
/** Region of the screen that needs redrawing. */
static Rect _dirty_rect;
static void MakePalette()
{
_cur_palette.first_dirty = 0;
_cur_palette.count_dirty = 256;
_local_palette = _cur_palette;
LOGPALETTE *pal = (LOGPALETTE*)alloca(sizeof(LOGPALETTE) + (256 - 1) * sizeof(PALETTEENTRY));
pal->palVersion = 0x300;
pal->palNumEntries = 256;
for (uint i = 0; i != 256; i++) {
pal->palPalEntry[i].peRed = _local_palette.palette[i].r;
pal->palPalEntry[i].peGreen = _local_palette.palette[i].g;
pal->palPalEntry[i].peBlue = _local_palette.palette[i].b;
pal->palPalEntry[i].peFlags = 0;
}
_wnd.gdi_palette = CreatePalette(pal);
if (_wnd.gdi_palette == nullptr) usererror("CreatePalette failed!\n");
}
static void UpdatePalette(HDC dc, uint start, uint count)
{
RGBQUAD rgb[256];
uint i;
for (i = 0; i != count; i++) {
rgb[i].rgbRed = _local_palette.palette[start + i].r;
rgb[i].rgbGreen = _local_palette.palette[start + i].g;
rgb[i].rgbBlue = _local_palette.palette[start + i].b;
rgb[i].rgbReserved = 0;
}
SetDIBColorTable(dc, start, count, rgb);
}
bool VideoDriver_Win32::ClaimMousePointer()
{
MyShowCursor(false, true);
return true;
}
struct Win32VkMapping {
byte vk_from;
byte vk_count;
byte map_to;
};
#define AS(x, z) {x, 0, z}
#define AM(x, y, z, w) {x, y - x, z}
static const Win32VkMapping _vk_mapping[] = {
/* Pageup stuff + up/down */
AM(VK_PRIOR, VK_DOWN, WKC_PAGEUP, WKC_DOWN),
/* Map letters & digits */
AM('A', 'Z', 'A', 'Z'),
AM('0', '9', '0', '9'),
AS(VK_ESCAPE, WKC_ESC),
AS(VK_PAUSE, WKC_PAUSE),
AS(VK_BACK, WKC_BACKSPACE),
AM(VK_INSERT, VK_DELETE, WKC_INSERT, WKC_DELETE),
AS(VK_SPACE, WKC_SPACE),
AS(VK_RETURN, WKC_RETURN),
AS(VK_TAB, WKC_TAB),
/* Function keys */
AM(VK_F1, VK_F12, WKC_F1, WKC_F12),
/* Numeric part */
AM(VK_NUMPAD0, VK_NUMPAD9, '0', '9'),
AS(VK_DIVIDE, WKC_NUM_DIV),
AS(VK_MULTIPLY, WKC_NUM_MUL),
AS(VK_SUBTRACT, WKC_NUM_MINUS),
AS(VK_ADD, WKC_NUM_PLUS),
AS(VK_DECIMAL, WKC_NUM_DECIMAL),
/* Other non-letter keys */
AS(0xBF, WKC_SLASH),
AS(0xBA, WKC_SEMICOLON),
AS(0xBB, WKC_EQUALS),
AS(0xDB, WKC_L_BRACKET),
AS(0xDC, WKC_BACKSLASH),
AS(0xDD, WKC_R_BRACKET),
AS(0xDE, WKC_SINGLEQUOTE),
AS(0xBC, WKC_COMMA),
AS(0xBD, WKC_MINUS),
AS(0xBE, WKC_PERIOD)
};
static uint MapWindowsKey(uint sym)
{
const Win32VkMapping *map;
uint key = 0;
for (map = _vk_mapping; map != endof(_vk_mapping); ++map) {
if ((uint)(sym - map->vk_from) <= map->vk_count) {
key = sym - map->vk_from + map->map_to;
break;
}
}
if (GetAsyncKeyState(VK_SHIFT) < 0) key |= WKC_SHIFT;
if (GetAsyncKeyState(VK_CONTROL) < 0) key |= WKC_CTRL;
if (GetAsyncKeyState(VK_MENU) < 0) key |= WKC_ALT;
return key;
}
static bool AllocateDibSection(int w, int h, bool force = false);
static void ClientSizeChanged(int w, int h)
{
/* allocate new dib section of the new size */
if (AllocateDibSection(w, h)) {
/* mark all palette colours dirty */
_cur_palette.first_dirty = 0;
_cur_palette.count_dirty = 256;
_local_palette = _cur_palette;
BlitterFactory::GetCurrentBlitter()->PostResize();
GameSizeChanged();
}
}
#ifdef _DEBUG
/* Keep this function here..
* It allows you to redraw the screen from within the MSVC debugger */
int RedrawScreenDebug()
{
HDC dc, dc2;
static int _fooctr;
HBITMAP old_bmp;
HPALETTE old_palette;
UpdateWindows();
dc = GetDC(_wnd.main_wnd);
dc2 = CreateCompatibleDC(dc);
old_bmp = (HBITMAP)SelectObject(dc2, _wnd.dib_sect);
old_palette = SelectPalette(dc, _wnd.gdi_palette, FALSE);
BitBlt(dc, 0, 0, _wnd.width, _wnd.height, dc2, 0, 0, SRCCOPY);
SelectPalette(dc, old_palette, TRUE);
SelectObject(dc2, old_bmp);
DeleteDC(dc2);
ReleaseDC(_wnd.main_wnd, dc);
return _fooctr++;
}
#endif
/**
* Instantiate a new window.
* @param full_screen Whether to make a full screen window or not.
* @return True if the window could be created.
*/
bool VideoDriver_Win32::MakeWindow(bool full_screen)
{
/* full_screen is whether the new window should be fullscreen,
* _wnd.fullscreen is whether the current window is. */
_fullscreen = full_screen;
/* recreate window? */
if ((full_screen || _wnd.fullscreen) && _wnd.main_wnd) {
DestroyWindow(_wnd.main_wnd);
_wnd.main_wnd = 0;
}
if (full_screen) {
DEVMODE settings;
memset(&settings, 0, sizeof(settings));
settings.dmSize = sizeof(settings);
settings.dmFields =
DM_BITSPERPEL |
DM_PELSWIDTH |
DM_PELSHEIGHT;
settings.dmBitsPerPel = BlitterFactory::GetCurrentBlitter()->GetScreenDepth();
settings.dmPelsWidth = _wnd.width_org;
settings.dmPelsHeight = _wnd.height_org;
/* Check for 8 bpp support. */
if (settings.dmBitsPerPel == 8 &&
(_support8bpp != S8BPP_HARDWARE || ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL)) {
settings.dmBitsPerPel = 32;
}
/* Test fullscreen with current resolution, if it fails use desktop resolution. */
if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN | CDS_TEST) != DISP_CHANGE_SUCCESSFUL) {
RECT r;
GetWindowRect(GetDesktopWindow(), &r);
/* Guard against recursion. If we already failed here once, just fall through to
* the next ChangeDisplaySettings call which will fail and error out appropriately. */
if ((int)settings.dmPelsWidth != r.right - r.left || (int)settings.dmPelsHeight != r.bottom - r.top) {
return this->ChangeResolution(r.right - r.left, r.bottom - r.top);
}
}
if (ChangeDisplaySettings(&settings, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL) {
this->MakeWindow(false); // don't care about the result
return false; // the request failed
}
} else if (_wnd.fullscreen) {
/* restore display? */
ChangeDisplaySettings(nullptr, 0);
/* restore the resolution */
_wnd.width = _bck_resolution.width;
_wnd.height = _bck_resolution.height;
}
{
RECT r;
DWORD style, showstyle;
int w, h;
showstyle = SW_SHOWNORMAL;
_wnd.fullscreen = full_screen;
if (_wnd.fullscreen) {
style = WS_POPUP;
SetRect(&r, 0, 0, _wnd.width_org, _wnd.height_org);
} else {
style = WS_OVERLAPPEDWINDOW;
/* On window creation, check if we were in maximize mode before */
if (_window_maximize) showstyle = SW_SHOWMAXIMIZED;
SetRect(&r, 0, 0, _wnd.width, _wnd.height);
}
AdjustWindowRect(&r, style, FALSE);
w = r.right - r.left;
h = r.bottom - r.top;
if (_wnd.main_wnd != nullptr) {
if (!_window_maximize) SetWindowPos(_wnd.main_wnd, 0, 0, 0, w, h, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOMOVE);
} else {
int x = (GetSystemMetrics(SM_CXSCREEN) - w) / 2;
int y = (GetSystemMetrics(SM_CYSCREEN) - h) / 2;
char window_title[64];
seprintf(window_title, lastof(window_title), "OpenTTD %s", _openttd_revision);
_wnd.main_wnd = CreateWindow(_T("OTTD"), MB_TO_WIDE(window_title), style, x, y, w, h, 0, 0, GetModuleHandle(nullptr), 0);
if (_wnd.main_wnd == nullptr) usererror("CreateWindow failed");
ShowWindow(_wnd.main_wnd, showstyle);
}
}
BlitterFactory::GetCurrentBlitter()->PostResize();
GameSizeChanged(); // invalidate all windows, force redraw
return true; // the request succeeded
}
/** Do palette animation and blit to the window. */
void VideoDriver_Win32::Paint()
{
PerformanceMeasurer framerate(PFE_VIDEO);
if (IsEmptyRect(_dirty_rect)) return;
/* Convert update region from logical to device coordinates. */
POINT pt = {0, 0};
ClientToScreen(_wnd.main_wnd, &pt);
RECT r = { _dirty_rect.left, _dirty_rect.top, _dirty_rect.right, _dirty_rect.bottom };
OffsetRect(&r, pt.x, pt.y);
/* Create a device context that is clipped to the region we need to draw.
* GetDCEx 'consumes' the update region, so we may not destroy it ourself. */
HRGN rgn = CreateRectRgnIndirect(&r);
HDC dc = GetDCEx(_wnd.main_wnd, rgn, DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | DCX_INTERSECTRGN);
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);
ReleaseDC(_wnd.main_wnd, dc);
MemSetT(&_dirty_rect, 0);
}
void VideoDriver_Win32::PaintThread()
{
/* First tell the main thread we're started */
std::unique_lock<std::recursive_mutex> lock(*_draw_mutex);
_draw_signal->notify_one();
/* Now wait for the first thing to draw! */
_draw_signal->wait(*_draw_mutex);
while (_draw_continue) {
this->Paint();
/* Flush GDI buffer to ensure drawing here doesn't conflict with any GDI usage in the main WndProc. */
GdiFlush();
_draw_signal->wait(*_draw_mutex);
}
}
/* static */ void VideoDriver_Win32::PaintThreadThunk(VideoDriver_Win32 *drv)
{
drv->PaintThread();
}
/** Forward key presses to the window system. */
static LRESULT HandleCharMsg(uint keycode, WChar charcode)
{
#if !defined(UNICODE)
static char prev_char = 0;
char input[2] = {(char)charcode, 0};
int input_len = 1;
if (prev_char != 0) {
/* We stored a lead byte previously, combine it with this byte. */
input[0] = prev_char;
input[1] = (char)charcode;
input_len = 2;
} else if (IsDBCSLeadByte(charcode)) {
/* We got a lead byte, store and exit. */
prev_char = charcode;
return 0;
}
prev_char = 0;
wchar_t w[2]; // Can get up to two code points as a result.
int len = MultiByteToWideChar(CP_ACP, 0, input, input_len, w, 2);
switch (len) {
case 1: // Normal unicode character.
charcode = w[0];
break;
case 2: // Got an UTF-16 surrogate pair back.
charcode = Utf16DecodeSurrogate(w[0], w[1]);
break;
default: // Some kind of error.
DEBUG(driver, 1, "Invalid DBCS character sequence encountered, dropping input");
charcode = 0;
break;
}
#else
static WChar prev_char = 0;
/* Did we get a lead surrogate? If yes, store and exit. */
if (Utf16IsLeadSurrogate(charcode)) {
if (prev_char != 0) DEBUG(driver, 1, "Got two UTF-16 lead surrogates, dropping the first one");
prev_char = charcode;
return 0;
}
/* Stored lead surrogate and incoming trail surrogate? Combine and forward to input handling. */
if (prev_char != 0) {
if (Utf16IsTrailSurrogate(charcode)) {
charcode = Utf16DecodeSurrogate(prev_char, charcode);
} else {
DEBUG(driver, 1, "Got an UTF-16 lead surrogate without a trail surrogate, dropping the lead surrogate");
}
}
prev_char = 0;
#endif /* UNICODE */
HandleKeypress(keycode, charcode);
return 0;
}
/** Should we draw the composition string ourself, i.e is this a normal IME? */
static bool DrawIMECompositionString()
{
return (_imm_props & IME_PROP_AT_CARET) && !(_imm_props & IME_PROP_SPECIAL_UI);
}
/** Set position of the composition window to the caret position. */
static void SetCompositionPos(HWND hwnd)
{
HIMC hIMC = ImmGetContext(hwnd);
if (hIMC != NULL) {
COMPOSITIONFORM cf;
cf.dwStyle = CFS_POINT;
if (EditBoxInGlobalFocus()) {
/* Get caret position. */
Point pt = _focused_window->GetCaretPosition();
cf.ptCurrentPos.x = _focused_window->left + pt.x;
cf.ptCurrentPos.y = _focused_window->top + pt.y;
} else {
cf.ptCurrentPos.x = 0;
cf.ptCurrentPos.y = 0;
}
ImmSetCompositionWindow(hIMC, &cf);
}
ImmReleaseContext(hwnd, hIMC);
}
/** Set the position of the candidate window. */
static void SetCandidatePos(HWND hwnd)
{
HIMC hIMC = ImmGetContext(hwnd);
if (hIMC != NULL) {
CANDIDATEFORM cf;
cf.dwIndex = 0;
cf.dwStyle = CFS_EXCLUDE;
if (EditBoxInGlobalFocus()) {
Point pt = _focused_window->GetCaretPosition();
cf.ptCurrentPos.x = _focused_window->left + pt.x;
cf.ptCurrentPos.y = _focused_window->top + pt.y;
if (_focused_window->window_class == WC_CONSOLE) {
cf.rcArea.left = _focused_window->left;
cf.rcArea.top = _focused_window->top;
cf.rcArea.right = _focused_window->left + _focused_window->width;
cf.rcArea.bottom = _focused_window->top + _focused_window->height;
} else {
cf.rcArea.left = _focused_window->left + _focused_window->nested_focus->pos_x;
cf.rcArea.top = _focused_window->top + _focused_window->nested_focus->pos_y;
cf.rcArea.right = cf.rcArea.left + _focused_window->nested_focus->current_x;
cf.rcArea.bottom = cf.rcArea.top + _focused_window->nested_focus->current_y;
}
} else {
cf.ptCurrentPos.x = 0;
cf.ptCurrentPos.y = 0;
SetRectEmpty(&cf.rcArea);
}
ImmSetCandidateWindow(hIMC, &cf);
}
ImmReleaseContext(hwnd, hIMC);
}
/** Handle WM_IME_COMPOSITION messages. */
static LRESULT HandleIMEComposition(HWND hwnd, WPARAM wParam, LPARAM lParam)
{
HIMC hIMC = ImmGetContext(hwnd);
if (hIMC != NULL) {
if (lParam & GCS_RESULTSTR) {
/* Read result string from the IME. */
LONG len = ImmGetCompositionString(hIMC, GCS_RESULTSTR, nullptr, 0); // Length is always in bytes, even in UNICODE build.
TCHAR *str = (TCHAR *)_alloca(len + sizeof(TCHAR));
len = ImmGetCompositionString(hIMC, GCS_RESULTSTR, str, len);
str[len / sizeof(TCHAR)] = '\0';
/* Transmit text to windowing system. */
if (len > 0) {
HandleTextInput(nullptr, true); // Clear marked string.
HandleTextInput(FS2OTTD(str));
}
SetCompositionPos(hwnd);
/* Don't pass the result string on to the default window proc. */
lParam &= ~(GCS_RESULTSTR | GCS_RESULTCLAUSE | GCS_RESULTREADCLAUSE | GCS_RESULTREADSTR);
}
if ((lParam & GCS_COMPSTR) && DrawIMECompositionString()) {
/* Read composition string from the IME. */
LONG len = ImmGetCompositionString(hIMC, GCS_COMPSTR, nullptr, 0); // Length is always in bytes, even in UNICODE build.
TCHAR *str = (TCHAR *)_alloca(len + sizeof(TCHAR));
len = ImmGetCompositionString(hIMC, GCS_COMPSTR, str, len);
str[len / sizeof(TCHAR)] = '\0';
if (len > 0) {
static char utf8_buf[1024];
convert_from_fs(str, utf8_buf, lengthof(utf8_buf));
/* Convert caret position from bytes in the input string to a position in the UTF-8 encoded string. */
LONG caret_bytes = ImmGetCompositionString(hIMC, GCS_CURSORPOS, nullptr, 0);
const char *caret = utf8_buf;
for (const TCHAR *c = str; *c != '\0' && *caret != '\0' && caret_bytes > 0; c++, caret_bytes--) {
/* Skip DBCS lead bytes or leading surrogates. */
#ifdef UNICODE
if (Utf16IsLeadSurrogate(*c)) {
#else
if (IsDBCSLeadByte(*c)) {
#endif
c++;
caret_bytes--;
}
Utf8Consume(&caret);
}
HandleTextInput(utf8_buf, true, caret);
} else {
HandleTextInput(nullptr, true);
}
lParam &= ~(GCS_COMPSTR | GCS_COMPATTR | GCS_COMPCLAUSE | GCS_CURSORPOS | GCS_DELTASTART);
}
}
ImmReleaseContext(hwnd, hIMC);
return lParam != 0 ? DefWindowProc(hwnd, WM_IME_COMPOSITION, wParam, lParam) : 0;
}
/** Clear the current composition string. */
static void CancelIMEComposition(HWND hwnd)
{
HIMC hIMC = ImmGetContext(hwnd);
if (hIMC != NULL) ImmNotifyIME(hIMC, NI_COMPOSITIONSTR, CPS_CANCEL, 0);
ImmReleaseContext(hwnd, hIMC);
/* Clear any marked string from the current edit box. */
HandleTextInput(nullptr, true);
}
static LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
static uint32 keycode = 0;
static bool console = false;
switch (msg) {
case WM_CREATE:
_cursor.in_window = false; // Win32 has mouse tracking.
SetCompositionPos(hwnd);
_imm_props = ImmGetProperty(GetKeyboardLayout(0), IGP_PROPERTY);
break;
case WM_PAINT: {
RECT r;
GetUpdateRect(hwnd, &r, FALSE);
static_cast<VideoDriver_Win32 *>(VideoDriver::GetInstance())->MakeDirty(r.left, r.top, r.right - r.left, r.bottom - r.top);
ValidateRect(hwnd, nullptr);
return 0;
}
case WM_PALETTECHANGED:
if ((HWND)wParam == hwnd) return 0;
FALLTHROUGH;
case WM_QUERYNEWPALETTE: {
HDC hDC = GetWindowDC(hwnd);
HPALETTE hOldPalette = SelectPalette(hDC, _wnd.gdi_palette, FALSE);
UINT nChanged = RealizePalette(hDC);
SelectPalette(hDC, hOldPalette, TRUE);
ReleaseDC(hwnd, hDC);
if (nChanged != 0) {
static_cast<VideoDriver_Win32 *>(VideoDriver::GetInstance())->MakeDirty(0, 0, _screen.width, _screen.height);
}
return 0;
}
case WM_CLOSE:
HandleExitGameRequest();
return 0;
case WM_DESTROY:
if (_window_maximize) _cur_resolution = _bck_resolution;
return 0;
case WM_LBUTTONDOWN:
SetCapture(hwnd);
_left_button_down = true;
HandleMouseEvents();
return 0;
case WM_LBUTTONUP:
ReleaseCapture();
_left_button_down = false;
_left_button_clicked = false;
HandleMouseEvents();
return 0;
case WM_RBUTTONDOWN:
SetCapture(hwnd);
_right_button_down = true;
_right_button_clicked = true;
HandleMouseEvents();
return 0;
case WM_RBUTTONUP:
ReleaseCapture();
_right_button_down = false;
HandleMouseEvents();
return 0;
case WM_MOUSELEAVE:
UndrawMouseCursor();
_cursor.in_window = false;
if (!_left_button_down && !_right_button_down) MyShowCursor(true);
return 0;
case WM_MOUSEMOVE: {
int x = (int16)LOWORD(lParam);
int y = (int16)HIWORD(lParam);
/* If the mouse was not in the window and it has moved it means it has
* come into the window, so start drawing the mouse. Also start
* tracking the mouse for exiting the window */
if (!_cursor.in_window) {
_cursor.in_window = true;
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = hwnd;
TrackMouseEvent(&tme);
}
if (_cursor.fix_at) {
/* Get all queued mouse events now in case we have to warp the cursor. In the
* end, we only care about the current mouse position and not bygone events. */
MSG m;
while (PeekMessage(&m, hwnd, WM_MOUSEMOVE, WM_MOUSEMOVE, PM_REMOVE | PM_NOYIELD | PM_QS_INPUT)) {
x = (int16)LOWORD(m.lParam);
y = (int16)HIWORD(m.lParam);
}
}
if (_cursor.UpdateCursorPosition(x, y, false)) {
POINT pt;
pt.x = _cursor.pos.x;
pt.y = _cursor.pos.y;
ClientToScreen(hwnd, &pt);
SetCursorPos(pt.x, pt.y);
}
MyShowCursor(false);
HandleMouseEvents();
return 0;
}
case WM_INPUTLANGCHANGE:
_imm_props = ImmGetProperty(GetKeyboardLayout(0), IGP_PROPERTY);
break;
case WM_IME_SETCONTEXT:
/* Don't show the composition window if we draw the string ourself. */
if (DrawIMECompositionString()) lParam &= ~ISC_SHOWUICOMPOSITIONWINDOW;
break;
case WM_IME_STARTCOMPOSITION:
SetCompositionPos(hwnd);
if (DrawIMECompositionString()) return 0;
break;
case WM_IME_COMPOSITION:
return HandleIMEComposition(hwnd, wParam, lParam);
case WM_IME_ENDCOMPOSITION:
/* Clear any pending composition string. */
HandleTextInput(nullptr, true);
if (DrawIMECompositionString()) return 0;
break;
case WM_IME_NOTIFY:
if (wParam == IMN_OPENCANDIDATE) SetCandidatePos(hwnd);
break;
#if !defined(UNICODE)
case WM_IME_CHAR:
if (GB(wParam, 8, 8) != 0) {
/* DBCS character, send lead byte first. */
HandleCharMsg(0, GB(wParam, 8, 8));
}
HandleCharMsg(0, GB(wParam, 0, 8));
return 0;
#endif
case WM_DEADCHAR:
console = GB(lParam, 16, 8) == 41;
return 0;
case WM_CHAR: {
uint scancode = GB(lParam, 16, 8);
uint charcode = wParam;
/* If the console key is a dead-key, we need to press it twice to get a WM_CHAR message.
* But we then get two WM_CHAR messages, so ignore the first one */
if (console && scancode == 41) {
console = false;
return 0;
}
/* IMEs and other input methods sometimes send a WM_CHAR without a WM_KEYDOWN,
* clear the keycode so a previous WM_KEYDOWN doesn't become 'stuck'. */
uint cur_keycode = keycode;
keycode = 0;
return HandleCharMsg(cur_keycode, charcode);
}
case WM_KEYDOWN: {
/* No matter the keyboard layout, we will map the '~' to the console. */
uint scancode = GB(lParam, 16, 8);
keycode = scancode == 41 ? (uint)WKC_BACKQUOTE : MapWindowsKey(wParam);
/* Silently drop all messages handled by WM_CHAR. */
MSG msg;
if (PeekMessage(&msg, nullptr, 0, 0, PM_NOREMOVE)) {
if ((msg.message == WM_CHAR || msg.message == WM_DEADCHAR) && GB(lParam, 16, 8) == GB(msg.lParam, 16, 8)) {
return 0;
}
}
uint charcode = MapVirtualKey(wParam, MAPVK_VK_TO_CHAR);
/* No character translation? */
if (charcode == 0) {
HandleKeypress(keycode, 0);
return 0;
}
/* Is the console key a dead key? If yes, ignore the first key down event. */
if (HasBit(charcode, 31) && !console) {
if (scancode == 41) {
console = true;
return 0;
}
}
console = false;
/* IMEs and other input methods sometimes send a WM_CHAR without a WM_KEYDOWN,
* clear the keycode so a previous WM_KEYDOWN doesn't become 'stuck'. */
uint cur_keycode = keycode;
keycode = 0;
return HandleCharMsg(cur_keycode, LOWORD(charcode));
}
case WM_SYSKEYDOWN: // user presses F10 or Alt, both activating the title-menu
switch (wParam) {
case VK_RETURN:
case 'F': // Full Screen on ALT + ENTER/F
ToggleFullScreen(!_wnd.fullscreen);
return 0;
case VK_MENU: // Just ALT
return 0; // do nothing
case VK_F10: // F10, ignore activation of menu
HandleKeypress(MapWindowsKey(wParam), 0);
return 0;
default: // ALT in combination with something else
HandleKeypress(MapWindowsKey(wParam), 0);
break;
}
break;
case WM_SIZE:
if (wParam != SIZE_MINIMIZED) {
/* Set maximized flag when we maximize (obviously), but also when we
* switched to fullscreen from a maximized state */
_window_maximize = (wParam == SIZE_MAXIMIZED || (_window_maximize && _fullscreen));
if (_window_maximize || _fullscreen) _bck_resolution = _cur_resolution;
ClientSizeChanged(LOWORD(lParam), HIWORD(lParam));
}
return 0;
case WM_SIZING: {
RECT *r = (RECT*)lParam;
RECT r2;
int w, h;
SetRect(&r2, 0, 0, 0, 0);
AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
w = r->right - r->left - (r2.right - r2.left);
h = r->bottom - r->top - (r2.bottom - r2.top);
w = std::max(w, 64);
h = std::max(h, 64);
SetRect(&r2, 0, 0, w, h);
AdjustWindowRect(&r2, GetWindowLong(hwnd, GWL_STYLE), FALSE);
w = r2.right - r2.left;
h = r2.bottom - r2.top;
switch (wParam) {
case WMSZ_BOTTOM:
r->bottom = r->top + h;
break;
case WMSZ_BOTTOMLEFT:
r->bottom = r->top + h;
r->left = r->right - w;
break;
case WMSZ_BOTTOMRIGHT:
r->bottom = r->top + h;
r->right = r->left + w;
break;
case WMSZ_LEFT:
r->left = r->right - w;
break;
case WMSZ_RIGHT:
r->right = r->left + w;
break;
case WMSZ_TOP:
r->top = r->bottom - h;
break;
case WMSZ_TOPLEFT:
r->top = r->bottom - h;
r->left = r->right - w;
break;
case WMSZ_TOPRIGHT:
r->top = r->bottom - h;
r->right = r->left + w;
break;
}
return TRUE;
}
/* needed for wheel */
#if !defined(WM_MOUSEWHEEL)
# define WM_MOUSEWHEEL 0x020A
#endif /* WM_MOUSEWHEEL */
#if !defined(GET_WHEEL_DELTA_WPARAM)
# define GET_WHEEL_DELTA_WPARAM(wparam) ((short)HIWORD(wparam))
#endif /* GET_WHEEL_DELTA_WPARAM */
case WM_MOUSEWHEEL: {
int delta = GET_WHEEL_DELTA_WPARAM(wParam);
if (delta < 0) {
_cursor.wheel++;
} else if (delta > 0) {
_cursor.wheel--;
}
HandleMouseEvents();
return 0;
}
case WM_SETFOCUS:
_wnd.has_focus = true;
SetCompositionPos(hwnd);
break;
case WM_KILLFOCUS:
_wnd.has_focus = false;
break;
case WM_ACTIVATE: {
/* Don't do anything if we are closing openttd */
if (_exit_game) break;
bool active = (LOWORD(wParam) != WA_INACTIVE);
bool minimized = (HIWORD(wParam) != 0);
if (_wnd.fullscreen) {
if (active && minimized) {
/* Restore the game window */
ShowWindow(hwnd, SW_RESTORE);
static_cast<VideoDriver_Win32 *>(VideoDriver::GetInstance())->MakeWindow(true);
} else if (!active && !minimized) {
/* Minimise the window and restore desktop */
ShowWindow(hwnd, SW_MINIMIZE);
ChangeDisplaySettings(nullptr, 0);
}
}
break;
}
}
return DefWindowProc(hwnd, msg, wParam, lParam);
}
static void RegisterWndClass()
{
static bool registered = false;
if (registered) return;
HINSTANCE hinst = GetModuleHandle(nullptr);
WNDCLASS wnd = {
CS_OWNDC,
WndProcGdi,
0,
0,
hinst,
LoadIcon(hinst, MAKEINTRESOURCE(100)),
LoadCursor(nullptr, IDC_ARROW),
0,
0,
_T("OTTD")
};
registered = true;
if (!RegisterClass(&wnd)) usererror("RegisterClass failed");
}
static bool AllocateDibSection(int w, int h, bool force)
{
BITMAPINFO *bi;
HDC dc;
uint bpp = BlitterFactory::GetCurrentBlitter()->GetScreenDepth();
w = std::max(w, 64);
h = std::max(h, 64);
if (!force && w == _screen.width && h == _screen.height) return false;
bi = (BITMAPINFO*)alloca(sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
memset(bi, 0, sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256);
bi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bi->bmiHeader.biWidth = _wnd.width = w;
bi->bmiHeader.biHeight = -(_wnd.height = h);
bi->bmiHeader.biPlanes = 1;
bi->bmiHeader.biBitCount = bpp;
bi->bmiHeader.biCompression = BI_RGB;
if (_wnd.dib_sect) DeleteObject(_wnd.dib_sect);
dc = GetDC(0);
_wnd.dib_sect = CreateDIBSection(dc, bi, DIB_RGB_COLORS, (VOID**)&_wnd.buffer_bits, nullptr, 0);
if (_wnd.dib_sect == nullptr) usererror("CreateDIBSection failed");
ReleaseDC(0, dc);
_screen.width = w;
_screen.pitch = (bpp == 8) ? Align(w, 4) : w;
_screen.height = h;
_screen.dst_ptr = _wnd.buffer_bits;
return true;
}
static const Dimension default_resolutions[] = {
{ 640, 480 },
{ 800, 600 },
{ 1024, 768 },
{ 1152, 864 },
{ 1280, 800 },
{ 1280, 960 },
{ 1280, 1024 },
{ 1400, 1050 },
{ 1600, 1200 },
{ 1680, 1050 },
{ 1920, 1200 }
};
static void FindResolutions()
{
uint i;
DEVMODEA dm;
/* Check modes for the relevant fullscreen bpp */
uint bpp = _support8bpp != S8BPP_HARDWARE ? 32 : BlitterFactory::GetCurrentBlitter()->GetScreenDepth();
_resolutions.clear();
/* XXX - EnumDisplaySettingsW crashes with unicows.dll on Windows95
* Doesn't really matter since we don't pass a string anyways, but still
* a letdown */
for (i = 0; EnumDisplaySettingsA(nullptr, i, &dm) != 0; i++) {
if (dm.dmBitsPerPel != bpp || dm.dmPelsWidth < 640 || dm.dmPelsHeight < 480) continue;
if (std::find(_resolutions.begin(), _resolutions.end(), Dimension(dm.dmPelsWidth, dm.dmPelsHeight)) != _resolutions.end()) continue;
_resolutions.emplace_back(dm.dmPelsWidth, dm.dmPelsHeight);
}
/* We have found no resolutions, show the default list */
if (_resolutions.empty()) {
_resolutions.assign(std::begin(default_resolutions), std::end(default_resolutions));
}
SortResolutions();
}
static FVideoDriver_Win32 iFVideoDriver_Win32;
const char *VideoDriver_Win32::Start(const StringList &parm)
{
if (BlitterFactory::GetCurrentBlitter()->GetScreenDepth() == 0) return "Only real blitters supported";
this->UpdateAutoResolution();
memset(&_wnd, 0, sizeof(_wnd));
RegisterWndClass();
MakePalette();
FindResolutions();
DEBUG(driver, 2, "Resolution for display: %ux%u", _cur_resolution.width, _cur_resolution.height);
/* fullscreen uses those */
_wnd.width_org = _cur_resolution.width;
_wnd.height_org = _cur_resolution.height;
AllocateDibSection(_cur_resolution.width, _cur_resolution.height);
this->MakeWindow(_fullscreen);
MarkWholeScreenDirty();
_draw_threaded = !GetDriverParamBool(parm, "no_threads") && !GetDriverParamBool(parm, "no_thread") && std::thread::hardware_concurrency() > 1;
return nullptr;
}
void VideoDriver_Win32::Stop()
{
DeleteObject(_wnd.gdi_palette);
DeleteObject(_wnd.dib_sect);
DestroyWindow(_wnd.main_wnd);
if (_wnd.fullscreen) ChangeDisplaySettings(nullptr, 0);
MyShowCursor(true);
}
void VideoDriver_Win32::MakeDirty(int left, int top, int width, int height)
{
Rect r = {left, top, left + width, top + height};
_dirty_rect = BoundingRect(_dirty_rect, r);
}
void VideoDriver_Win32::CheckPaletteAnim()
{
if (_cur_palette.count_dirty == 0) return;
_local_palette = _cur_palette;
this->MakeDirty(0, 0, _screen.width, _screen.height);
}
void VideoDriver_Win32::InputLoop()
{
bool old_ctrl_pressed = _ctrl_pressed;
_ctrl_pressed = _wnd.has_focus && GetAsyncKeyState(VK_CONTROL) < 0;
_shift_pressed = _wnd.has_focus && GetAsyncKeyState(VK_SHIFT) < 0;
#if defined(_DEBUG)
if (_shift_pressed)
#else
/* Speedup when pressing tab, except when using ALT+TAB
* to switch to another application. */
if (_wnd.has_focus && GetAsyncKeyState(VK_TAB) < 0 && GetAsyncKeyState(VK_MENU) >= 0)
#endif
{
if (!_networking && _game_mode != GM_MENU) _fast_forward |= 2;
} else if (_fast_forward & 2) {
_fast_forward = 0;
}
/* Determine which directional keys are down. */
if (_wnd.has_focus) {
_dirkeys =
(GetAsyncKeyState(VK_LEFT) < 0 ? 1 : 0) +
(GetAsyncKeyState(VK_UP) < 0 ? 2 : 0) +
(GetAsyncKeyState(VK_RIGHT) < 0 ? 4 : 0) +
(GetAsyncKeyState(VK_DOWN) < 0 ? 8 : 0);
} else {
_dirkeys = 0;
}
if (old_ctrl_pressed != _ctrl_pressed) HandleCtrlChanged();
}
void VideoDriver_Win32::MainLoop()
{
MSG mesg;
std::thread draw_thread;
if (_draw_threaded) {
/* Initialise the mutex first, because that's the thing we *need*
* directly in the newly created thread. */
try {
_draw_signal = new std::condition_variable_any();
_draw_mutex = new std::recursive_mutex();
} catch (...) {
_draw_threaded = false;
}
if (_draw_threaded) {
this->draw_lock = std::unique_lock<std::recursive_mutex>(*_draw_mutex);
_draw_continue = true;
_draw_threaded = StartNewThread(&draw_thread, "ottd:draw-win32", &VideoDriver_Win32::PaintThreadThunk, this);
/* Free the mutex if we won't be able to use it. */
if (!_draw_threaded) {
this->draw_lock.unlock();
this->draw_lock.release();
delete _draw_mutex;
delete _draw_signal;
_draw_mutex = nullptr;
_draw_signal = nullptr;
} else {
DEBUG(driver, 1, "Threaded drawing enabled");
/* Wait till the draw thread has started itself. */
_draw_signal->wait(*_draw_mutex);
}
}
}
_wnd.running = true;
for (;;) {
InteractiveRandom(); // randomness
while (PeekMessage(&mesg, nullptr, 0, 0, PM_REMOVE)) {
/* Convert key messages to char messages if we want text input. */
if (EditBoxInGlobalFocus()) TranslateMessage(&mesg);
DispatchMessage(&mesg);
}
if (_exit_game) break;
/* Flush GDI buffer to ensure we don't conflict with the drawing thread. */
GdiFlush();
if (this->Tick()) {
if (_draw_mutex != nullptr && !HasModalProgress()) {
_draw_signal->notify_one();
} else {
this->Paint();
}
}
this->SleepTillNextTick();
}
if (_draw_threaded) {
_draw_continue = false;
/* Sending signal if there is no thread blocked
* is very valid and results in noop */
_draw_signal->notify_all();
if (this->draw_lock.owns_lock()) this->draw_lock.unlock();
this->draw_lock.release();
draw_thread.join();
delete _draw_mutex;
delete _draw_signal;
_draw_mutex = nullptr;
}
}
bool VideoDriver_Win32::ChangeResolution(int w, int h)
{
std::unique_lock<std::recursive_mutex> lock;
if (_draw_mutex != nullptr) lock = std::unique_lock<std::recursive_mutex>(*_draw_mutex);
if (_window_maximize) ShowWindow(_wnd.main_wnd, SW_SHOWNORMAL);
_wnd.width = _wnd.width_org = w;
_wnd.height = _wnd.height_org = h;
return this->MakeWindow(_fullscreen); // _wnd.fullscreen screws up ingame resolution switching
}
bool VideoDriver_Win32::ToggleFullscreen(bool full_screen)
{
std::unique_lock<std::recursive_mutex> lock;
if (_draw_mutex != nullptr) lock = std::unique_lock<std::recursive_mutex>(*_draw_mutex);
return this->MakeWindow(full_screen);
}
bool VideoDriver_Win32::AfterBlitterChange()
{
assert(BlitterFactory::GetCurrentBlitter()->GetScreenDepth() != 0);
return AllocateDibSection(_screen.width, _screen.height, true) && this->MakeWindow(_fullscreen);
}
void VideoDriver_Win32::AcquireBlitterLock()
{
if (_draw_mutex != nullptr) _draw_mutex->lock();
}
void VideoDriver_Win32::ReleaseBlitterLock()
{
if (_draw_mutex != nullptr) _draw_mutex->unlock();
}
void VideoDriver_Win32::EditBoxLostFocus()
{
std::unique_lock<std::recursive_mutex> lock;
if (_draw_mutex != nullptr) lock = std::unique_lock<std::recursive_mutex>(*_draw_mutex);
CancelIMEComposition(_wnd.main_wnd);
SetCompositionPos(_wnd.main_wnd);
SetCandidatePos(_wnd.main_wnd);
}
Dimension VideoDriver_Win32::GetScreenSize() const
{
return { static_cast<uint>(GetSystemMetrics(SM_CXSCREEN)), static_cast<uint>(GetSystemMetrics(SM_CYSCREEN)) };
}
float VideoDriver_Win32::GetDPIScale()
{
typedef UINT (WINAPI *PFNGETDPIFORWINDOW)(HWND hwnd);
typedef UINT (WINAPI *PFNGETDPIFORSYSTEM)(VOID);
typedef HRESULT (WINAPI *PFNGETDPIFORMONITOR)(HMONITOR hMonitor, int dpiType, UINT *dpiX, UINT *dpiY);
static PFNGETDPIFORWINDOW _GetDpiForWindow = nullptr;
static PFNGETDPIFORSYSTEM _GetDpiForSystem = nullptr;
static PFNGETDPIFORMONITOR _GetDpiForMonitor = nullptr;
static bool init_done = false;
if (!init_done) {
init_done = true;
_GetDpiForWindow = (PFNGETDPIFORWINDOW)GetProcAddress(GetModuleHandle(_T("User32")), "GetDpiForWindow");
_GetDpiForSystem = (PFNGETDPIFORSYSTEM)GetProcAddress(GetModuleHandle(_T("User32")), "GetDpiForSystem");
_GetDpiForMonitor = (PFNGETDPIFORMONITOR)GetProcAddress(LoadLibrary(_T("Shcore.dll")), "GetDpiForMonitor");
}
UINT cur_dpi = 0;
if (cur_dpi == 0 && _GetDpiForWindow != nullptr && _wnd.main_wnd != nullptr) {
/* Per window DPI is supported since Windows 10 Ver 1607. */
cur_dpi = _GetDpiForWindow(_wnd.main_wnd);
}
if (cur_dpi == 0 && _GetDpiForMonitor != nullptr && _wnd.main_wnd != nullptr) {
/* Per monitor is supported since Windows 8.1. */
UINT dpiX, dpiY;
if (SUCCEEDED(_GetDpiForMonitor(MonitorFromWindow(_wnd.main_wnd, MONITOR_DEFAULTTOPRIMARY), 0 /* MDT_EFFECTIVE_DPI */, &dpiX, &dpiY))) {
cur_dpi = dpiX; // X and Y are always identical.
}
}
if (cur_dpi == 0 && _GetDpiForSystem != nullptr) {
/* Fall back to system DPI. */
cur_dpi = _GetDpiForSystem();
}
return cur_dpi > 0 ? cur_dpi / 96.0f : 1.0f; // Default Windows DPI value is 96.
}
bool VideoDriver_Win32::LockVideoBuffer()
{
if (_draw_threaded) this->draw_lock.lock();
return true;
}
void VideoDriver_Win32::UnlockVideoBuffer()
{
if (_draw_threaded) this->draw_lock.unlock();
}
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