/
graphics.cpp
1449 lines (1196 loc) · 38.1 KB
/
graphics.cpp
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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
*/
#include "tsage/events.h"
#include "tsage/graphics.h"
#include "tsage/resources.h"
#include "tsage/tsage.h"
#include "tsage/core.h"
#include "common/algorithm.h"
#include "graphics/palette.h"
#include "graphics/surface.h"
#include "tsage/globals.h"
namespace tSage {
/**
* Creates a new graphics surface with the specified area of another surface
*
* @src Source surface
* @bounds Area to backup
*/
GfxSurface *Surface_getArea(GfxSurface &src, const Rect &bounds) {
assert(bounds.isValidRect());
GfxSurface *dest = new GfxSurface();
dest->create(bounds.width(), bounds.height());
Graphics::Surface srcSurface = src.lockSurface();
Graphics::Surface destSurface = dest->lockSurface();
byte *srcP = (byte *)srcSurface.getBasePtr(bounds.left, bounds.top);
byte *destP = (byte *)destSurface.getBasePtr(0, 0);
for (int y = bounds.top; y < bounds.bottom; ++y, srcP += srcSurface.pitch, destP += destSurface.pitch)
Common::copy(srcP, srcP + destSurface.pitch, destP);
src.unlockSurface();
dest->unlockSurface();
return dest;
}
/**
* Translates a raw image resource into a graphics surface. The caller is then responsible
* for managing and destroying the surface when done with it
*
* @imgData Raw image resource
* @size Size of the resource
*/
GfxSurface surfaceFromRes(const byte *imgData) {
Rect r(0, 0, READ_LE_UINT16(imgData), READ_LE_UINT16(imgData + 2));
GfxSurface s;
s.create(r.width(), r.height());
s._centroid.x = READ_LE_UINT16(imgData + 4);
s._centroid.y = READ_LE_UINT16(imgData + 6);
s._transColor = *(imgData + 8);
bool rleEncoded = (imgData[9] & 2) != 0;
const byte *srcP = imgData + 10;
Graphics::Surface destSurface = s.lockSurface();
byte *destP = (byte *)destSurface.getBasePtr(0, 0);
if (!rleEncoded) {
Common::copy(srcP, srcP + (r.width() * r.height()), destP);
} else {
Common::set_to(destP, destP + (r.width() * r.height()), s._transColor);
for (int yp = 0; yp < r.height(); ++yp) {
int width = r.width();
destP = (byte *)destSurface.getBasePtr(0, yp);
while (width > 0) {
uint8 controlVal = *srcP++;
if ((controlVal & 0x80) == 0) {
// Copy specified number of bytes
Common::copy(srcP, srcP + controlVal, destP);
width -= controlVal;
srcP += controlVal;
destP += controlVal;
} else if ((controlVal & 0x40) == 0) {
// Skip a specified number of output pixels
destP += controlVal & 0x3f;
width -= controlVal & 0x3f;
} else {
// Copy a specified pixel a given number of times
controlVal &= 0x3f;
int pixel = *srcP++;
Common::set_to(destP, destP + controlVal, pixel);
destP += controlVal;
width -= controlVal;
}
}
assert(width == 0);
}
}
s.unlockSurface();
return s;
}
GfxSurface surfaceFromRes(int resNum, int rlbNum, int subNum) {
uint size;
byte *imgData = _resourceManager->getSubResource(resNum, rlbNum, subNum, &size);
GfxSurface surface = surfaceFromRes(imgData);
DEALLOCATE(imgData);
return surface;
}
/*--------------------------------------------------------------------------*/
void Rect::set(int16 x1, int16 y1, int16 x2, int16 y2) {
left = x1; top = y1;
right = x2; bottom = y2;
}
/**
* Collapses the rectangle in all four directions by the given x and y amounts
*
* @dx x amount to collapse x edges by
* @dy y amount to collapse y edges by
*/
void Rect::collapse(int dx, int dy) {
left += dx; right -= dx;
top += dy; bottom -= dy;
}
/**
* Centers the rectangle at a given position
*
* @xp x position for new center
* @yp y position for new center
*/
void Rect::center(int xp, int yp) {
moveTo(xp - (width() / 2), yp - (height() / 2));
}
/**
* Centers the rectangle at the center of a second passed rectangle
*
* @r Second rectangle whose center to use
*/
void Rect::center(const Rect &r) {
center(r.left + (r.width() / 2), r.top + (r.height() / 2));
}
/*
* Repositions the bounds if necessary so it falls entirely within the passed bounds
*
* @r The bounds the current rect should be within
*/
void Rect::contain(const Rect &r) {
if (left < r.left) translate(r.left - left, 0);
if (right > r.right) translate(r.right - right, 0);
if (top < r.top) translate(0, r.top - top);
if (bottom > r.bottom) translate(0, r.bottom - bottom);
}
/**
* Resizes and positions a given rect based on raw image data and a passed scaling percentage
*
* @frame Raw image frame
* @xp New x position
* @yp New y position
* @percent Scaling percentage
*/
void Rect::resize(const GfxSurface &surface, int xp, int yp, int percent) {
int xe = surface.getBounds().width() * percent / 100;
int ye = surface.getBounds().height() * percent / 100;
this->set(0, 0, xe, ye);
if (!right) ++right;
if (!bottom) ++bottom;
this->moveTo(xp, yp);
int xd = surface._centroid.x * percent / 100;
int yd = surface._centroid.y * percent / 100;
this->translate(-xd, -yd);
}
/**
* Expands the pane region to contain the specified Rect
*/
void Rect::expandPanes() {
_globals->_paneRegions[0].uniteRect(*this);
_globals->_paneRegions[1].uniteRect(*this);
}
/**
* Serialises the given rect
*/
void Rect::synchronize(Serializer &s) {
s.syncAsSint16LE(left);
s.syncAsSint16LE(top);
s.syncAsSint16LE(right);
s.syncAsSint16LE(bottom);
}
/*--------------------------------------------------------------------------*/
GfxSurface::GfxSurface() : _bounds(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT) {
_disableUpdates = false;
_screenSurface = false;
_lockSurfaceCtr = 0;
_customSurface = NULL;
_screenSurfaceP = NULL;
_transColor = -1;
}
GfxSurface::GfxSurface(const GfxSurface &s) {
_lockSurfaceCtr = 0;
_customSurface = NULL;
this->operator =(s);
}
GfxSurface::~GfxSurface() {
if (_customSurface) {
_customSurface->free();
delete _customSurface;
}
}
/**
* Specifies that the surface will encapsulate the ScummVM screen surface
*/
void GfxSurface::setScreenSurface() {
_screenSurface = true;
_customSurface = NULL;
_lockSurfaceCtr = 0;
}
/**
* Specifies that the surface should maintain it's own internal surface
*/
void GfxSurface::create(int width, int height) {
assert((width >= 0) && (height >= 0));
_screenSurface = false;
if (_customSurface) {
_customSurface->free();
delete _customSurface;
}
_customSurface = new Graphics::Surface();
_customSurface->create(width, height, Graphics::PixelFormat::createFormatCLUT8());
Common::set_to((byte *)_customSurface->pixels, (byte *)_customSurface->pixels + (width * height), 0);
_bounds = Rect(0, 0, width, height);
}
/**
* Locks the surface for access, and returns a raw ScummVM surface to manipulate it
*/
Graphics::Surface GfxSurface::lockSurface() {
++_lockSurfaceCtr;
Graphics::Surface *src;
if (_screenSurface) {
if (_lockSurfaceCtr == 1)
_screenSurfaceP = g_system->lockScreen();
src = _screenSurfaceP;
} else
src = _customSurface;
assert(src);
// Setup the returned surface either as one pointing to the same pixels as the source, or
// as a subset of the source one based on the currently set bounds
Graphics::Surface result;
result.w = _bounds.width();
result.h = _bounds.height();
result.pitch = src->pitch;
result.format = src->format;
result.pixels = src->getBasePtr(_bounds.left, _bounds.top);
return result;
}
/**
* Unlocks the surface after having accessed it with the lockSurface method
*/
void GfxSurface::unlockSurface() {
assert(_lockSurfaceCtr > 0);
--_lockSurfaceCtr;
if ((_lockSurfaceCtr == 0) && _screenSurface) {
g_system->unlockScreen();
}
}
/**
* Fills a specified rectangle on the surface with the specified color
*
* @bounds Area to fill
* @color Color to use
*/
void GfxSurface::fillRect(const Rect &bounds, int color) {
Graphics::Surface surface = lockSurface();
surface.fillRect(bounds, color);
unlockSurface();
}
GfxSurface &GfxSurface::operator=(const GfxSurface &s) {
assert(_lockSurfaceCtr == 0);
assert(s._lockSurfaceCtr == 0);
if (_customSurface) {
_customSurface->free();
delete _customSurface;
}
_customSurface = s._customSurface;
_screenSurface = s._screenSurface;
_disableUpdates = s._disableUpdates;
_bounds = s._bounds;
_centroid = s._centroid;
_transColor = s._transColor;
if (_customSurface) {
// Surface owns the internal data, so replicate it so new surface owns it's own
_customSurface = new Graphics::Surface();
_customSurface->create(s._customSurface->w, s._customSurface->h, Graphics::PixelFormat::createFormatCLUT8());
const byte *srcP = (const byte *)s._customSurface->getBasePtr(0, 0);
byte *destP = (byte *)_customSurface->getBasePtr(0, 0);
Common::copy(srcP, srcP + (_bounds.width() * _bounds.height()), destP);
}
return *this;
}
/**
* Displays a message on-screen until either a mouse or keypress
*/
bool GfxSurface::displayText(const Common::String &msg, const Common::Point &pt) {
// Set up a new graphics manager
GfxManager gfxManager;
gfxManager.activate();
gfxManager._font._colors.background = 0;
gfxManager._font._colors.foreground = 7;
gfxManager._font.setFontNumber(2);
// Get the area for text display
Rect textRect;
gfxManager.getStringBounds(msg.c_str(), textRect, 200);
textRect.center(pt.x, pt.y);
// Make a backup copy of the area the text will occupy
Rect saveRect = textRect;
saveRect.collapse(-20, -8);
GfxSurface *savedArea = Surface_getArea(gfxManager.getSurface(), saveRect);
// Display the text
gfxManager._font.writeLines(msg.c_str(), textRect, ALIGN_LEFT);
// Write for a mouse or keypress
Event event;
while (!_globals->_events.getEvent(event, EVENT_BUTTON_DOWN | EVENT_KEYPRESS) && !_vm->getEventManager()->shouldQuit())
;
// Restore the display area
gfxManager.copyFrom(*savedArea, saveRect.left, saveRect.top);
delete savedArea;
gfxManager.deactivate();
return (event.eventType == EVENT_KEYPRESS) && (event.kbd.keycode == Common::KEYCODE_RETURN);
}
/**
* Loads a quarter of a screen from a resource
*/
void GfxSurface::loadScreenSection(Graphics::Surface &dest, int xHalf, int yHalf, int xSection, int ySection) {
int screenNum = _globals->_sceneManager._scene->_activeScreenNumber;
Rect updateRect(0, 0, 160, 100);
updateRect.translate(xHalf * 160, yHalf * 100);
int xHalfCount = (_globals->_sceneManager._scene->_backgroundBounds.right + 159) / 160;
int yHalfCount = (_globals->_sceneManager._scene->_backgroundBounds.bottom + 99) / 100;
if (xSection < xHalfCount && ySection < yHalfCount) {
int rlbNum = xSection * yHalfCount + ySection;
byte *data = _resourceManager->getResource(RES_BITMAP, screenNum, rlbNum);
for (int y = 0; y < updateRect.height(); ++y) {
byte *pSrc = data + y * 160;
byte *pDest = (byte *)dest.getBasePtr(updateRect.left, updateRect.top + y);
for (int x = 0; x < updateRect.width(); ++x, ++pSrc, ++pDest) {
*pDest = *pSrc;
}
}
DEALLOCATE(data);
}
}
/**
* Returns an array indicating which pixels of a source image horizontally or vertically get
* included in a scaled image
*/
static int *scaleLine(int size, int srcSize) {
const int PRECISION_FACTOR = 1000;
int scale = PRECISION_FACTOR * size / srcSize;
assert(scale >= 0);
int *v = new int[size];
Common::set_to(v, &v[size], -1);
int distCtr = PRECISION_FACTOR / 2;
int *destP = v;
for (int distIndex = 0; distIndex < srcSize; ++distIndex) {
distCtr += scale;
while (distCtr > PRECISION_FACTOR) {
assert(destP < &v[size]);
*destP++ = distIndex;
distCtr -= PRECISION_FACTOR;
}
}
return v;
}
/**
* Scales a passed surface, creating a new surface with the result
* @param srcImage Source image to scale
* @param NewWidth New width for scaled image
* @param NewHeight New height for scaled image
* @remarks Caller is responsible for freeing the returned surface
*/
static GfxSurface ResizeSurface(GfxSurface &src, int xSize, int ySize, int transIndex) {
GfxSurface s;
s.create(xSize, ySize);
Graphics::Surface srcImage = src.lockSurface();
Graphics::Surface destImage = s.lockSurface();
int *horizUsage = scaleLine(xSize, srcImage.w);
int *vertUsage = scaleLine(ySize, srcImage.h);
// Loop to create scaled version
for (int yp = 0; yp < ySize; ++yp) {
byte *destP = (byte *)destImage.getBasePtr(0, yp);
if (vertUsage[yp] == -1) {
Common::set_to(destP, destP + xSize, transIndex);
} else {
const byte *srcP = (const byte *)srcImage.getBasePtr(0, vertUsage[yp]);
for (int xp = 0; xp < xSize; ++xp) {
if (horizUsage[xp] != -1) {
const byte *tempSrcP = srcP + horizUsage[xp];
*destP++ = *tempSrcP++;
} else {
// Pixel overrun at the end of the line
*destP++ = transIndex;
}
}
}
}
// Unlock surfaces
src.unlockSurface();
s.unlockSurface();
// Delete arrays and return surface
delete[] horizUsage;
delete[] vertUsage;
return s;
}
/**
* Copys an area from one GfxSurface to another
*/
void GfxSurface::copyFrom(GfxSurface &src, Rect srcBounds, Rect destBounds, Region *priorityRegion) {
GfxSurface srcImage;
if (srcBounds.isEmpty())
return;
if (srcBounds == src.getBounds())
srcImage = src;
else {
// Set the source image to be the subset specified by the source bounds
Graphics::Surface srcSurface = src.lockSurface();
srcImage.create(srcBounds.width(), srcBounds.height());
Graphics::Surface destSurface = srcImage.lockSurface();
const byte *srcP = (const byte *)srcSurface.getBasePtr(srcBounds.left, srcBounds.top);
byte *destP = (byte *)destSurface.pixels;
for (int yp = srcBounds.top; yp < srcBounds.bottom; ++yp, srcP += srcSurface.pitch, destP += destSurface.pitch) {
Common::copy(srcP, srcP + srcBounds.width(), destP);
}
srcImage.unlockSurface();
src.unlockSurface();
}
if ((destBounds.width() != srcBounds.width()) || (destBounds.height() != srcBounds.height()))
srcImage = ResizeSurface(srcImage, destBounds.width(), destBounds.height(), src._transColor);
Graphics::Surface srcSurface = srcImage.lockSurface();
Graphics::Surface destSurface = lockSurface();
// Adjust bounds to ensure destination will be on-screen
int srcX = 0, srcY = 0;
if (destBounds.left < 0) {
srcX = -destBounds.left;
destBounds.left = 0;
}
if (destBounds.top < 0) {
srcY = -destBounds.top;
destBounds.top = 0;
}
if (destBounds.right > destSurface.w)
destBounds.right = destSurface.w;
if (destBounds.bottom > destSurface.h)
destBounds.bottom = destSurface.h;
if (destBounds.isValidRect()) {
const byte *pSrc = (const byte *)srcSurface.getBasePtr(srcX, srcY);
byte *pDest = (byte *)destSurface.getBasePtr(destBounds.left, destBounds.top);
for (int y = 0; y < destBounds.height(); ++y, pSrc += srcSurface.pitch, pDest += destSurface.pitch) {
if (!priorityRegion && (src._transColor == -1))
Common::copy(pSrc, pSrc + destBounds.width(), pDest);
else {
const byte *tempSrc = pSrc;
byte *tempDest = pDest;
int xp = destBounds.left;
while (tempSrc < (pSrc + destBounds.width())) {
if (!priorityRegion || !priorityRegion->contains(Common::Point(
xp + _globals->_sceneManager._scene->_sceneBounds.left,
destBounds.top + y + _globals->_sceneManager._scene->_sceneBounds.top))) {
if (*tempSrc != src._transColor)
*tempDest = *tempSrc;
}
++tempSrc;
++tempDest;
++xp;
}
}
}
}
unlockSurface();
srcImage.unlockSurface();
}
void GfxSurface::draw(const Common::Point &pt, Rect *rect) {
Rect tempRect = getBounds();
tempRect.translate(-_centroid.x, -_centroid.y);
tempRect.translate(pt.x, pt.y);
if (rect) {
// Only copy needed rect out without drawing
*rect = tempRect;
} else {
// Draw image
_globals->gfxManager().copyFrom(*this, tempRect, NULL);
}
}
/*--------------------------------------------------------------------------*/
GfxElement::GfxElement() {
_owner = NULL;
_keycode = 0;
_flags = 0;
}
void GfxElement::setDefaults() {
_flags = 0;
_fontNumber = _globals->_gfxFontNumber;
_colors = _globals->_gfxColors;
_fontColors = _globals->_fontColors;
}
/**
* Highlights the specified graphics element
*/
void GfxElement::highlight() {
// Get a lock on the surface
GfxManager &gfxManager = _globals->gfxManager();
Graphics::Surface surface = gfxManager.lockSurface();
// Scan through the contents of the element, switching any occurances of the foreground
// color with the background color and vice versa
Rect tempRect(_bounds);
tempRect.collapse(2, 2);
for (int yp = tempRect.top; yp < tempRect.bottom; ++yp) {
byte *lineP = (byte *)surface.getBasePtr(tempRect.left, yp);
for (int xp = tempRect.left; xp < tempRect.right; ++xp, ++lineP) {
if (*lineP == _colors.background) *lineP = _colors.foreground;
else if (*lineP == _colors.foreground) *lineP = _colors.background;
}
}
// Release the surface
gfxManager.unlockSurface();
}
/**
* Fills the background of the specified element with a border frame
*/
void GfxElement::drawFrame() {
// Get a lock on the surface and save the active font
GfxManager &gfxManager = _globals->gfxManager();
gfxManager.lockSurface();
uint8 bgColor, fgColor;
if (_flags & GFXFLAG_THICK_FRAME) {
bgColor = 0;
fgColor = 0;
} else {
bgColor = _fontColors.background;
fgColor = _fontColors.foreground;
}
Rect tempRect = _bounds;
tempRect.collapse(3, 3);
tempRect.collapse(-1, -1);
gfxManager.fillRect(tempRect, _colors.background);
--tempRect.bottom; --tempRect.right;
gfxManager.fillArea(tempRect.left, tempRect.top, bgColor);
gfxManager.fillArea(tempRect.left, tempRect.bottom, fgColor);
gfxManager.fillArea(tempRect.right, tempRect.top, fgColor);
gfxManager.fillArea(tempRect.right, tempRect.bottom, fgColor);
tempRect.collapse(-1, -1);
gfxManager.fillRect2(tempRect.left + 1, tempRect.top, tempRect.width() - 1, 1, bgColor);
gfxManager.fillRect2(tempRect.left, tempRect.top + 1, 1, tempRect.height() - 1, bgColor);
gfxManager.fillRect2(tempRect.left + 1, tempRect.bottom, tempRect.width() - 1, 1, fgColor);
gfxManager.fillRect2(tempRect.right, tempRect.top + 1, 1, tempRect.height() - 1, fgColor);
gfxManager.fillArea(tempRect.left, tempRect.top, 0);
gfxManager.fillArea(tempRect.left, tempRect.bottom, 0);
gfxManager.fillArea(tempRect.right, tempRect.top, 0);
gfxManager.fillArea(tempRect.right, tempRect.bottom, 0);
tempRect.collapse(-1, -1);
gfxManager.fillRect2(tempRect.left + 2, tempRect.top, tempRect.width() - 3, 1, 0);
gfxManager.fillRect2(tempRect.left, tempRect.top + 2, 1, tempRect.height() - 3, 0);
gfxManager.fillRect2(tempRect.left + 2, tempRect.bottom, tempRect.width() - 3, 1, 0);
gfxManager.fillRect2(tempRect.right, tempRect.top + 2, 1, tempRect.height() - 3, 0);
gfxManager.unlockSurface();
}
/**
* Handles events when the control has focus
*
* @event Event to process
*/
bool GfxElement::focusedEvent(Event &event) {
bool highlightFlag = false;
while (!_vm->getEventManager()->shouldQuit()) {
g_system->delayMillis(10);
if (_bounds.contains(event.mousePos)) {
if (!highlightFlag) {
// First highlight call to show the highlight
highlightFlag = true;
highlight();
}
} else if (highlightFlag) {
// Mouse is outside the element, so remove the highlight
highlightFlag = false;
highlight();
}
if (_globals->_events.getEvent(event, EVENT_BUTTON_UP))
break;
}
if (highlightFlag) {
// Mouse is outside the element, so remove the highlight
highlight();
}
return highlightFlag;
}
/*--------------------------------------------------------------------------*/
GfxImage::GfxImage() : GfxElement() {
_resNum = 0;
_rlbNum = 0;
_cursorNum = 0;
}
void GfxImage::setDetails(int resNum, int rlbNum, int cursorNum) {
_resNum = resNum;
_rlbNum = rlbNum;
_cursorNum = cursorNum;
setDefaults();
}
void GfxImage::setDefaults() {
GfxElement::setDefaults();
// Decode the image
uint size;
byte *imgData = _resourceManager->getSubResource(_resNum, _rlbNum, _cursorNum, &size);
_surface = surfaceFromRes(imgData);
DEALLOCATE(imgData);
// Set up the display bounds
Rect imgBounds = _surface.getBounds();
imgBounds.moveTo(_bounds.left, _bounds.top);
_bounds = imgBounds;
}
void GfxImage::draw() {
Rect tempRect = _bounds;
tempRect.translate(_globals->gfxManager()._topLeft.x, _globals->gfxManager()._topLeft.y);
_globals->gfxManager().copyFrom(_surface, tempRect);
}
/*--------------------------------------------------------------------------*/
GfxMessage::GfxMessage() : GfxElement() {
_textAlign = ALIGN_LEFT;
_width = 0;
}
void GfxMessage::set(const Common::String &s, int width, TextAlign textAlign) {
_message = s;
_width = width;
_textAlign = textAlign;
setDefaults();
}
void GfxMessage::setDefaults() {
GfxElement::setDefaults();
GfxFontBackup font;
GfxManager &gfxManager = _globals->gfxManager();
Rect tempRect;
gfxManager._font.setFontNumber(this->_fontNumber);
gfxManager.getStringBounds(_message.c_str(), tempRect, _width);
tempRect.collapse(-1, -1);
tempRect.moveTo(_bounds.left, _bounds.top);
_bounds = tempRect;
}
void GfxMessage::draw() {
GfxFontBackup font;
GfxManager &gfxManager = _globals->gfxManager();
// Set the font and color
gfxManager.setFillFlag(false);
gfxManager._font.setFontNumber(_fontNumber);
gfxManager._font._colors.foreground = this->_colors.foreground;
// Display the text
gfxManager._font.writeLines(_message.c_str(), _bounds, _textAlign);
}
/*--------------------------------------------------------------------------*/
void GfxButton::setDefaults() {
GfxElement::setDefaults();
GfxFontBackup font;
GfxManager &gfxManager = _globals->gfxManager();
Rect tempRect;
// Get the string bounds and round up the x end to a multiple of 16
gfxManager._font.setFontNumber(this->_fontNumber);
gfxManager._font.getStringBounds(_message.c_str(), tempRect, 240);
tempRect.right = ((tempRect.right + 15) / 16) * 16;
// Set the button bounds to a reduced area
tempRect.collapse(-3, -3);
tempRect.moveTo(_bounds.left, _bounds.top);
_bounds = tempRect;
}
void GfxButton::draw() {
// Get a lock on the surface and save the active font
GfxFontBackup font;
GfxManager &gfxManager = _globals->gfxManager();
gfxManager.lockSurface();
// Draw a basic frame for the button
drawFrame();
// Set the font and color
gfxManager._font.setFontNumber(_fontNumber);
gfxManager._font._colors.foreground = this->_colors.foreground;
// Display the button's text
Rect tempRect(_bounds);
tempRect.collapse(3, 3);
gfxManager._font.writeLines(_message.c_str(), tempRect, ALIGN_CENTER);
gfxManager.unlockSurface();
}
bool GfxButton::process(Event &event) {
switch (event.eventType) {
case EVENT_BUTTON_DOWN:
if (!event.handled) {
if (_bounds.contains(event.mousePos)) {
bool result = focusedEvent(event);
event.handled = true;
return result;
}
}
break;
case EVENT_KEYPRESS:
if (!event.handled && (event.kbd.keycode == _keycode)) {
// TODO: Ensure momentary click operation displays
highlight();
g_system->delayMillis(20);
highlight();
event.handled = true;
return true;
}
default:
break;
}
return false;
}
/*--------------------------------------------------------------------------*/
GfxDialog::GfxDialog() {
_savedArea = NULL;
_defaultButton = NULL;
}
GfxDialog::~GfxDialog() {
remove();
}
void GfxDialog::setDefaults() {
GfxElement::setDefaults();
// Initialise the embedded graphics manager
_gfxManager.setDefaults();
// Figure out a rect needed for all the added elements
GfxElementList::iterator i;
Rect tempRect;
for (i = _elements.begin(); i != _elements.end(); ++i)
tempRect.extend((*i)->_bounds);
// Set the dialog boundaries
_gfxManager._bounds = tempRect;
tempRect.collapse(-6, -6);
_bounds = tempRect;
}
void GfxDialog::remove() {
if (_savedArea) {
// Restore the area the dialog covered
_globals->_gfxManagerInstance.copyFrom(*_savedArea, _bounds.left, _bounds.top);
delete _savedArea;
_savedArea = NULL;
}
}
void GfxDialog::draw() {
Rect tempRect(_bounds);
// Make a backup copy of the area the dialog will occupy
_savedArea = Surface_getArea(_globals->_gfxManagerInstance.getSurface(), _bounds);
// Set the palette for use in the dialog
setPalette();
_gfxManager.activate();
// Fill in the contents of the entire dialog
_gfxManager._bounds = Rect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
drawFrame();
// Reset the dialog's graphics manager to only draw within the dialog boundaries
tempRect.translate(6, 6);
_gfxManager._bounds = tempRect;
// Draw each element in the dialog in order
GfxElementList::iterator i;
for (i = _elements.begin(); i != _elements.end(); ++i) {
(*i)->draw();
}
// If there's a default button, then draw it
if (_defaultButton) {
_defaultButton->_flags |= GFXFLAG_THICK_FRAME;
_defaultButton->draw();
}
_gfxManager.deactivate();
}
void GfxDialog::add(GfxElement *element) {
_elements.push_back(element);
element->_owner = this;
}
void GfxDialog::addElements(GfxElement *ge, ...) {
va_list va;
va_start(va, ge);
GfxElement *gfxElement = ge;
while (gfxElement) {
add(gfxElement);
gfxElement = va_arg(va, GfxElement *);
}
va_end(va);
}
void GfxDialog::setTopLeft(int xp, int yp) {
_bounds.moveTo(xp - 6, yp - 6);
}
void GfxDialog::setCenter(int xp, int yp) {
setTopLeft(xp - (_bounds.width() / 2), yp - (_bounds.height() / 2));
}
GfxButton *GfxDialog::execute(GfxButton *defaultButton) {
_gfxManager.activate();
if (defaultButton != _defaultButton) {
if (_defaultButton) {
_defaultButton->_flags &= ~GFXFLAG_THICK_FRAME;
_defaultButton->draw();
}
_defaultButton = defaultButton;
}
if (_defaultButton) {
_defaultButton->_flags |= GFXFLAG_THICK_FRAME;
_defaultButton->draw();
}
// Event loop
GfxButton *selectedButton = NULL;
while (!_vm->getEventManager()->shouldQuit()) {
Event event;
while (_globals->_events.getEvent(event)) {
// Adjust mouse positions to be relative within the dialog
event.mousePos.x -= _gfxManager._bounds.left;
event.mousePos.y -= _gfxManager._bounds.top;
for (GfxElementList::iterator i = _elements.begin(); i != _elements.end(); ++i) {
if ((*i)->process(event))
selectedButton = static_cast<GfxButton *>(*i);
}
}
if (selectedButton)
break;
else if (!event.handled) {
if ((event.eventType == EVENT_KEYPRESS) && (event.kbd.keycode == Common::KEYCODE_ESCAPE)) {
selectedButton = NULL;
break;
} else if ((event.eventType == EVENT_KEYPRESS) && (event.kbd.keycode == Common::KEYCODE_RETURN)) {
selectedButton = defaultButton;
break;
}
}
g_system->delayMillis(10);
g_system->updateScreen();
}
_gfxManager.deactivate();
if (_defaultButton)
_defaultButton->_flags &= ~GFXFLAG_THICK_FRAME;