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/* $Id$ */
/*
* 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/>.
*/
/******************************************************************************
* Cocoa video driver *
* Known things left to do: *
* Scale© the old pixel buffer to the new one when switching resolution. *
******************************************************************************/
#ifdef WITH_COCOA
#include "../../stdafx.h"
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9
#define Rect OTTDRect
#define Point OTTDPoint
#import <Cocoa/Cocoa.h>
#undef Rect
#undef Point
#include "../../debug.h"
#include "../../core/geometry_type.hpp"
#include "../../core/sort_func.hpp"
#include "cocoa_v.h"
#include "../../gfx_func.h"
#include "../../os/macosx/macos.h"
/**
* Important notice regarding all modifications!!!!!!!
* There are certain limitations because the file is objective C++.
* gdb has limitations.
* C++ and objective C code can't be joined in all cases (classes stuff).
* Read http://developer.apple.com/releasenotes/Cocoa/Objective-C++.html for more information.
*/
/* From Menus.h (according to Xcode Developer Documentation) */
extern "C" void ShowMenuBar();
extern "C" void HideMenuBar();
/* Structure for rez switch gamma fades
* We can hide the monitor flicker by setting the gamma tables to 0
*/
#define QZ_GAMMA_TABLE_SIZE 256
struct OTTD_QuartzGammaTable {
CGGammaValue red[QZ_GAMMA_TABLE_SIZE];
CGGammaValue green[QZ_GAMMA_TABLE_SIZE];
CGGammaValue blue[QZ_GAMMA_TABLE_SIZE];
};
/* Add methods to get at private members of NSScreen.
* Since there is a bug in Apple's screen switching code that does not update
* this variable when switching to fullscreen, we'll set it manually (but only
* for the main screen).
*/
@interface NSScreen (NSScreenAccess)
- (void) setFrame:(NSRect)frame;
@end
@implementation NSScreen (NSScreenAccess)
- (void) setFrame:(NSRect)frame
{
/* The 64 bits libraries don't seem to know about _frame, so this hack won't work. */
#if !__LP64__
_frame = frame;
#endif
}
@end
class FullscreenSubdriver: public CocoaSubdriver {
CGDirectDisplayID display_id; ///< 0 == main display (only support single display)
CFDictionaryRef cur_mode; ///< current mode of the display
CFDictionaryRef save_mode; ///< original mode of the display
CGDirectPaletteRef palette; ///< palette of an 8-bit display
/* Gamma functions to try to hide the flash from a res switch
* Fade the display from normal to black
* Save gamma tables for fade back to normal
*/
uint32 FadeGammaOut(OTTD_QuartzGammaTable *table)
{
CGGammaValue redTable[QZ_GAMMA_TABLE_SIZE];
CGGammaValue greenTable[QZ_GAMMA_TABLE_SIZE];
CGGammaValue blueTable[QZ_GAMMA_TABLE_SIZE];
unsigned int actual;
if (CGGetDisplayTransferByTable(this->display_id, QZ_GAMMA_TABLE_SIZE, table->red, table->green, table->blue, &actual) != CGDisplayNoErr
|| actual != QZ_GAMMA_TABLE_SIZE) {
return 1;
}
memcpy(redTable, table->red, sizeof(redTable));
memcpy(greenTable, table->green, sizeof(greenTable));
memcpy(blueTable, table->blue, sizeof(greenTable));
for (float percent = 1.0; percent >= 0.0; percent -= 0.01) {
for (int j = 0; j < QZ_GAMMA_TABLE_SIZE; j++) {
redTable[j] = redTable[j] * percent;
greenTable[j] = greenTable[j] * percent;
blueTable[j] = blueTable[j] * percent;
}
if (CGSetDisplayTransferByTable(this->display_id, QZ_GAMMA_TABLE_SIZE, redTable, greenTable, blueTable) != CGDisplayNoErr) {
CGDisplayRestoreColorSyncSettings();
return 1;
}
CSleep(10);
}
return 0;
}
/* Fade the display from black to normal
* Restore previously saved gamma values
*/
uint32 FadeGammaIn(const OTTD_QuartzGammaTable *table)
{
CGGammaValue redTable[QZ_GAMMA_TABLE_SIZE];
CGGammaValue greenTable[QZ_GAMMA_TABLE_SIZE];
CGGammaValue blueTable[QZ_GAMMA_TABLE_SIZE];
memset(redTable, 0, sizeof(redTable));
memset(greenTable, 0, sizeof(greenTable));
memset(blueTable, 0, sizeof(greenTable));
for (float percent = 0.0; percent <= 1.0; percent += 0.01) {
for (int j = 0; j < QZ_GAMMA_TABLE_SIZE; j++) {
redTable[j] = table->red[j] * percent;
greenTable[j] = table->green[j] * percent;
blueTable[j] = table->blue[j] * percent;
}
if (CGSetDisplayTransferByTable(this->display_id, QZ_GAMMA_TABLE_SIZE, redTable, greenTable, blueTable) != CGDisplayNoErr) {
CGDisplayRestoreColorSyncSettings();
return 1;
}
CSleep(10);
}
return 0;
}
/** Wait for the VBL to occur (estimated since we don't have a hardware interrupt) */
void WaitForVerticalBlank()
{
/* The VBL delay is based on Ian Ollmann's RezLib <iano@cco.caltech.edu> */
CFNumberRef refreshRateCFNumber = (const __CFNumber*)CFDictionaryGetValue(this->cur_mode, kCGDisplayRefreshRate);
if (refreshRateCFNumber == NULL) return;
double refreshRate;
if (CFNumberGetValue(refreshRateCFNumber, kCFNumberDoubleType, &refreshRate) == 0) return;
if (refreshRate == 0) return;
double linesPerSecond = refreshRate * this->device_height;
double target = this->device_height;
/* Figure out the first delay so we start off about right */
double position = CGDisplayBeamPosition(this->display_id);
if (position > target) position = 0;
double adjustment = (target - position) / linesPerSecond;
CSleep((uint32)(adjustment * 1000));
}
bool SetVideoMode(int w, int h, int bpp)
{
/* Define this variables at the top (against coding style) because
* otherwise GCC 4.2 barfs at the goto's jumping over variable initialization. */
NSRect screen_rect;
int gamma_error;
NSPoint mouseLocation;
/* Destroy any previous mode */
if (this->pixel_buffer != NULL) {
free(this->pixel_buffer);
this->pixel_buffer = NULL;
}
/* See if requested mode exists */
boolean_t exact_match;
this->cur_mode = CGDisplayBestModeForParameters(this->display_id, bpp, w, h, &exact_match);
/* If the mode wasn't an exact match, check if it has the right bpp, and update width and height */
if (!exact_match) {
int act_bpp;
CFNumberRef number = (const __CFNumber*) CFDictionaryGetValue(this->cur_mode, kCGDisplayBitsPerPixel);
CFNumberGetValue(number, kCFNumberSInt32Type, &act_bpp);
if (act_bpp != bpp) {
DEBUG(driver, 0, "Failed to find display resolution");
goto ERR_NO_MATCH;
}
number = (const __CFNumber*)CFDictionaryGetValue(this->cur_mode, kCGDisplayWidth);
CFNumberGetValue(number, kCFNumberSInt32Type, &w);
number = (const __CFNumber*)CFDictionaryGetValue(this->cur_mode, kCGDisplayHeight);
CFNumberGetValue(number, kCFNumberSInt32Type, &h);
}
/* Capture the main screen */
CGDisplayCapture(this->display_id);
/* Store the mouse coordinates relative to the total screen */
mouseLocation = [ NSEvent mouseLocation ];
mouseLocation.x /= this->device_width;
mouseLocation.y /= this->device_height;
/* Fade display to zero gamma */
OTTD_QuartzGammaTable gamma_table;
gamma_error = this->FadeGammaOut(&gamma_table);
/* Put up the blanking window (a window above all other windows) */
if (CGDisplayCapture(this->display_id) != CGDisplayNoErr ) {
DEBUG(driver, 0, "Failed capturing display");
goto ERR_NO_CAPTURE;
}
/* Do the physical switch */
if (CGDisplaySwitchToMode(this->display_id, this->cur_mode) != CGDisplayNoErr) {
DEBUG(driver, 0, "Failed switching display resolution");
goto ERR_NO_SWITCH;
}
/* Since CGDisplayBaseAddress and CGDisplayBytesPerRow are no longer available on 10.7,
* disable until a replacement can be found. */
if (MacOSVersionIsAtLeast(10, 7, 0)) {
this->window_buffer = NULL;
this->window_pitch = 0;
} else {
#if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7)
this->window_buffer = CGDisplayBaseAddress(this->display_id);
this->window_pitch = CGDisplayBytesPerRow(this->display_id);
#endif
}
this->device_width = CGDisplayPixelsWide(this->display_id);
this->device_height = CGDisplayPixelsHigh(this->display_id);
this->device_depth = bpp;
/* Setup double-buffer emulation */
this->pixel_buffer = malloc(this->device_width * this->device_height * this->device_depth / 8);
if (this->pixel_buffer == NULL) {
DEBUG(driver, 0, "Failed to allocate memory for double buffering");
goto ERR_DOUBLEBUF;
}
if (this->device_depth == 8 && !CGDisplayCanSetPalette(this->display_id)) {
DEBUG(driver, 0, "Not an indexed display mode.");
goto ERR_NOT_INDEXED;
}
/* If we don't hide menu bar, it will get events and interrupt the program */
HideMenuBar();
/* Hide the OS cursor */
CGDisplayHideCursor(this->display_id);
/* Fade the display to original gamma */
if (!gamma_error) FadeGammaIn(&gamma_table);
/* There is a bug in Cocoa where NSScreen doesn't synchronize
* with CGDirectDisplay, so the main screen's frame is wrong.
* As a result, coordinate translation produces incorrect results.
* We can hack around this bug by setting the screen rect ourselves.
* This hack should be removed if/when the bug is fixed.
*/
screen_rect = NSMakeRect(0, 0, this->device_width, this->device_height);
[ [ NSScreen mainScreen ] setFrame:screen_rect ];
this->UpdatePalette(0, 256);
/* Move the mouse cursor to approx. the same location */
CGPoint display_mouseLocation;
display_mouseLocation.x = mouseLocation.x * this->device_width;
display_mouseLocation.y = this->device_height - (mouseLocation.y * this->device_height);
_cursor.in_window = true;
CGDisplayMoveCursorToPoint(this->display_id, display_mouseLocation);
return true;
/* Since the blanking window covers *all* windows (even force quit) correct recovery is crucial */
ERR_NOT_INDEXED:
free(this->pixel_buffer);
this->pixel_buffer = NULL;
ERR_DOUBLEBUF:
CGDisplaySwitchToMode(this->display_id, this->save_mode);
ERR_NO_SWITCH:
CGReleaseAllDisplays();
ERR_NO_CAPTURE:
if (!gamma_error) this->FadeGammaIn(&gamma_table);
ERR_NO_MATCH:
this->device_width = 0;
this->device_height = 0;
return false;
}
void RestoreVideoMode()
{
/* Release fullscreen resources */
OTTD_QuartzGammaTable gamma_table;
int gamma_error = this->FadeGammaOut(&gamma_table);
/* Restore original screen resolution/bpp */
CGDisplaySwitchToMode(this->display_id, this->save_mode);
CGReleaseAllDisplays();
/* Bring back the cursor */
CGDisplayShowCursor(this->display_id);
ShowMenuBar();
/* Reset the main screen's rectangle
* See comment in SetVideoMode for why we do this */
NSRect screen_rect = NSMakeRect(0, 0, CGDisplayPixelsWide(this->display_id), CGDisplayPixelsHigh(this->display_id));
[ [ NSScreen mainScreen ] setFrame:screen_rect ];
/* Destroy the pixel buffer */
if (this->pixel_buffer != NULL) {
free(this->pixel_buffer);
this->pixel_buffer = NULL;
}
if (!gamma_error) this->FadeGammaIn(&gamma_table);
this->device_width = CGDisplayPixelsWide(this->display_id);
this->device_height = CGDisplayPixelsHigh(this->display_id);
}
public:
FullscreenSubdriver()
{
/* Initialize the video settings; this data persists between mode switches */
this->display_id = kCGDirectMainDisplay;
this->save_mode = CGDisplayCurrentMode(this->display_id);
this->palette = CGPaletteCreateDefaultColorPalette();
this->device_width = CGDisplayPixelsWide(this->display_id);
this->device_height = CGDisplayPixelsHigh(this->display_id);
this->device_depth = 0;
this->pixel_buffer = NULL;
this->num_dirty_rects = MAX_DIRTY_RECTS;
}
virtual ~FullscreenSubdriver()
{
this->RestoreVideoMode();
}
virtual void Draw(bool force_update)
{
const uint8 *src = (uint8 *)this->pixel_buffer;
uint8 *dst = (uint8 *)this->window_buffer;
uint pitch = this->window_pitch;
uint width = this->device_width;
uint num_dirty = this->num_dirty_rects;
uint bytesperpixel = this->device_depth / 8;
/* Check if we need to do anything */
if (num_dirty == 0) return;
if (num_dirty >= MAX_DIRTY_RECTS) {
num_dirty = 1;
this->dirty_rects[0].left = 0;
this->dirty_rects[0].top = 0;
this->dirty_rects[0].right = this->device_width;
this->dirty_rects[0].bottom = this->device_height;
}
WaitForVerticalBlank();
/* Build the region of dirty rectangles */
for (uint i = 0; i < num_dirty; i++) {
uint y = this->dirty_rects[i].top;
uint left = this->dirty_rects[i].left;
uint length = this->dirty_rects[i].right - left;
uint bottom = this->dirty_rects[i].bottom;
for (; y < bottom; y++) {
memcpy(dst + y * pitch + left * bytesperpixel, src + y * width * bytesperpixel + left * bytesperpixel, length * bytesperpixel);
}
}
this->num_dirty_rects = 0;
}
virtual void MakeDirty(int left, int top, int width, int height)
{
if (this->num_dirty_rects < MAX_DIRTY_RECTS) {
this->dirty_rects[this->num_dirty_rects].left = left;
this->dirty_rects[this->num_dirty_rects].top = top;
this->dirty_rects[this->num_dirty_rects].right = left + width;
this->dirty_rects[this->num_dirty_rects].bottom = top + height;
}
this->num_dirty_rects++;
}
virtual void UpdatePalette(uint first_color, uint num_colors)
{
if (this->device_depth != 8) return;
for (uint32_t index = first_color; index < first_color + num_colors; index++) {
/* Clamp colors between 0.0 and 1.0 */
CGDeviceColor color;
color.red = _cur_palette.palette[index].r / 255.0;
color.blue = _cur_palette.palette[index].b / 255.0;
color.green = _cur_palette.palette[index].g / 255.0;
CGPaletteSetColorAtIndex(this->palette, color, index);
}
CGDisplaySetPalette(this->display_id, this->palette);
}
virtual uint ListModes(OTTD_Point *modes, uint max_modes)
{
return QZ_ListModes(modes, max_modes, this->display_id, this->device_depth);
}
virtual bool ChangeResolution(int w, int h, int bpp)
{
int old_width = this->device_width;
int old_height = this->device_height;
int old_bpp = this->device_depth;
if (bpp != 8 && bpp != 32) error("Cocoa: This video driver only supports 8 and 32 bpp blitters.");
if (SetVideoMode(w, h, bpp)) return true;
if (old_width != 0 && old_height != 0) SetVideoMode(old_width, old_height, old_bpp);
return false;
}
virtual bool IsFullscreen()
{
return true;
}
virtual int GetWidth()
{
return this->device_width;
}
virtual int GetHeight()
{
return this->device_height;
}
virtual void *GetPixelBuffer()
{
return this->pixel_buffer;
}
/*
* Convert local coordinate to window server (CoreGraphics) coordinate.
* In fullscreen mode this just means copying the coords.
*/
virtual CGPoint PrivateLocalToCG(NSPoint *p)
{
return CGPointMake(p->x, p->y);
}
virtual NSPoint GetMouseLocation(NSEvent *event)
{
NSPoint pt = [ NSEvent mouseLocation ];
pt.y = this->device_height - pt.y;
return pt;
}
virtual bool MouseIsInsideView(NSPoint *pt)
{
return pt->x >= 0 && pt->y >= 0 && pt->x < this->device_width && pt->y < this->device_height;
}
virtual bool IsActive()
{
return true;
}
};
CocoaSubdriver *QZ_CreateFullscreenSubdriver(int width, int height, int bpp)
{
/* OSX 10.7 doesn't support this way of the fullscreen driver. If we end up here
* OpenTTD was compiled without SDK 10.7 available and - and thus we don't support
* fullscreen mode in OSX 10.7 or higher, as necessary elements for this way have
* been removed from the API.
*/
if (MacOSVersionIsAtLeast(10, 7, 0)) {
return NULL;
}
FullscreenSubdriver *ret = new FullscreenSubdriver();
if (!ret->ChangeResolution(width, height, bpp)) {
delete ret;
return NULL;
}
return ret;
}
#endif /* MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9 */
#endif /* WITH_COCOA */
|