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Diffstat (limited to 'engines/tsage/graphics.cpp')
| -rw-r--r-- | engines/tsage/graphics.cpp | 1430 |
1 files changed, 1430 insertions, 0 deletions
diff --git a/engines/tsage/graphics.cpp b/engines/tsage/graphics.cpp new file mode 100644 index 0000000000..641e10b3e9 --- /dev/null +++ b/engines/tsage/graphics.cpp @@ -0,0 +1,1430 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +#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/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._transColour = *(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._transColour); + + 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 = _vm->_dataManager->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; +} + +/** + * Centres the rectangle at a given position + * + * @xp x position for new centre + * @yp y position for new centre + */ +void Rect::centre(int xp, int yp) { + moveTo(xp - (width() / 2), yp - (height() / 2)); +} + +/** + * Centres the rectangle at the centre of a second passed rectangle + * + * @r Second rectangle whose centre to use + */ +void Rect::centre(const Rect &r) { + centre(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::synchronise(Serialiser &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; +} + +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; + _customSurface = new Graphics::Surface(); + _customSurface->create(width, height, 1); + _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.bytesPerPixel = src->bytesPerPixel; + 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 colour + * + * @bounds Area to fill + * @colour Colour to use + */ +void GfxSurface::fillRect(const Rect &bounds, int colour) { + Graphics::Surface surface = lockSurface(); + surface.fillRect(bounds, colour); + 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; + _transColour = s._transColour; + + 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, 1); + 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._colours.background = 0; + gfxManager._font._colours.foreground = 7; + gfxManager._font.setFontNumber(2); + + // Get the area for text display + Rect textRect; + gfxManager.getStringBounds(msg.c_str(), textRect, 200); + textRect.centre(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 = _vm->_dataManager->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) { + int scale = 100 * size / srcSize; + assert(scale >= 0); + int *v = new int[size]; + Common::set_to(v, &v[size], 0); + + int distCtr = 0; + int *destP = v; + for (int distIndex = 0; distIndex < srcSize; ++distIndex) { + distCtr += scale; + while (distCtr >= 100) { + assert(destP < &v[size]); + *destP++ = distIndex; + distCtr -= 100; + } + } + + 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) { + 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) { + const byte *srcP = (const byte *)srcImage.getBasePtr(0, vertUsage[yp]); + byte *destP = (byte *)destImage.getBasePtr(0, yp); + + for (int xp = 0; xp < xSize; ++xp) { + const byte *tempSrcP = srcP + horizUsage[xp]; + *destP++ = *tempSrcP++; + } + } + + // 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 == 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()); + + 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._transColour == -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._transColour) + *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; + _colours = _globals->_gfxColours; + _fontColours = _globals->_fontColours; +} + +/** + * 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 + // colour with the background colour 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 == _colours.background) *lineP = _colours.foreground; + else if (*lineP == _colours.foreground) *lineP = _colours.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 bgColour, fgColour; + if (_flags & GFXFLAG_THICK_FRAME) { + bgColour = 0; + fgColour = 0; + } else { + bgColour = _fontColours.background; + fgColour = _fontColours.foreground; + } + + Rect tempRect = _bounds; + tempRect.collapse(3, 3); + tempRect.collapse(-1, -1); + gfxManager.fillRect(tempRect, _colours.background); + + --tempRect.bottom; --tempRect.right; + gfxManager.fillArea(tempRect.left, tempRect.top, bgColour); + gfxManager.fillArea(tempRect.left, tempRect.bottom, fgColour); + gfxManager.fillArea(tempRect.right, tempRect.top, fgColour); + gfxManager.fillArea(tempRect.right, tempRect.bottom, fgColour); + + tempRect.collapse(-1, -1); + gfxManager.fillRect2(tempRect.left + 1, tempRect.top, tempRect.width() - 1, 1, bgColour); + gfxManager.fillRect2(tempRect.left, tempRect.top + 1, 1, tempRect.height() - 1, bgColour); + gfxManager.fillRect2(tempRect.left + 1, tempRect.bottom, tempRect.width() - 1, 1, fgColour); + gfxManager.fillRect2(tempRect.right, tempRect.top + 1, 1, tempRect.height() - 1, fgColour); + + 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 = _vm->_dataManager->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 colour + gfxManager.setFillFlag(false); + gfxManager._font.setFontNumber(_fontNumber); + gfxManager._font._colours.foreground = this->_colours.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 colour + gfxManager._font.setFontNumber(_fontNumber); + gfxManager._font._colours.foreground = this->_colours.foreground; + + // Display the button's text + Rect tempRect(_bounds); + tempRect.collapse(3, 3); + gfxManager._font.writeLines(_message.c_str(), tempRect, ALIGN_CENTRE); + + 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::setCentre(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; + } + } + } + + _gfxManager.deactivate(); + if (_defaultButton) + _defaultButton->_flags &= ~GFXFLAG_THICK_FRAME; + + return selectedButton; +} + +void GfxDialog::setPalette() { + _globals->_scenePalette.loadPalette(0); + _globals->_scenePalette.setPalette(0, 1); + _globals->_scenePalette.setPalette(_globals->_scenePalette._colours.foreground, 1); + _globals->_scenePalette.setPalette(_globals->_fontColours.background, 1); + _globals->_scenePalette.setPalette(_globals->_fontColours.foreground, 1); + _globals->_scenePalette.setPalette(255, 1); +} + +/*--------------------------------------------------------------------------*/ + +GfxManager::GfxManager() : _surface(_globals->_screenSurface), _oldManager(NULL) { + _font.setOwner(this); + _font._fillFlag = false; + _bounds = Rect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT); +} + +GfxManager::GfxManager(GfxSurface &s) : _surface(s), _oldManager(NULL) { + _font.setOwner(this); + _font._fillFlag = false; +} + +void GfxManager::setDefaults() { + Rect screenBounds(0, 0, g_system->getWidth(), g_system->getHeight()); + + _surface.setBounds(screenBounds); + _bounds = screenBounds; + _pane0Rect4 = screenBounds; + + _font._edgeSize = Common::Point(1, 1); + _font._colours = _globals->_fontColours; + _font.setFontNumber(_globals->_gfxFontNumber); +} + +void GfxManager::activate() { + assert(!contains(_globals->_gfxManagers, this)); + _globals->_gfxManagers.push_front(this); +} + +void GfxManager::deactivate() { + // Assert that there will still be another manager, and we're correctly removing our own + assert((_globals->_gfxManagers.size() > 1) && (&_globals->gfxManager() == this)); + _globals->_gfxManagers.pop_front(); +} + +int GfxManager::getStringWidth(const char *s, int numChars) { + return _font.getStringWidth(s, numChars); +} + +int GfxManager::getStringWidth(const char *s) { + return _font.getStringWidth(s); +} + +void GfxManager::getStringBounds(const char *s, Rect &bounds, int maxWidth) { + _font.getStringBounds(s, bounds, maxWidth); +} + +void GfxManager::fillArea(int xp, int yp, int colour) { + _surface.setBounds(_bounds); + Rect tempRect(xp, yp, xp + _font._edgeSize.x, yp + _font._edgeSize.y); + _surface.fillRect(tempRect, colour); +} + +void GfxManager::fillRect(const Rect &bounds, int colour) { + _surface.setBounds(_bounds); + _surface.fillRect(bounds, colour); +} + +void GfxManager::fillRect2(int xs, int ys, int width, int height, int colour) { + _surface.setBounds(_bounds); + _surface.fillRect(Rect(xs, ys, xs + width, ys + height), colour); +} + +/** + * Sets up the standard palette for dialog displays + */ +void GfxManager::setDialogPalette() { + // Get the main palette information + RGB8 palData[256]; + uint count, start; + _vm->_dataManager->getPalette(0, &palData[0], &start, &count); + g_system->getPaletteManager()->setPalette((byte *)&palData[0], start, count); + + // Miscellaneous + uint32 white = 0xffffffff; + g_system->getPaletteManager()->setPalette((const byte *)&white, 255, 1); +} + +/** + * Returns the angle of line connecting two points + */ +int GfxManager::getAngle(const Common::Point &p1, const Common::Point &p2) { + int xDiff = p2.x - p1.x, yDiff = p1.y - p2.y; + + if (!xDiff && !yDiff) + return -1; + else if (!xDiff) + return (p2.y >= p1.y) ? 180 : 0; + else if (!yDiff) + return (p2.x >= p1.x) ? 90 : 270; + else { + int result = (((xDiff * 100) / ((abs(xDiff) + abs(yDiff))) * 90) / 100); + + if (yDiff < 0) + result = 180 - result; + else if (xDiff < 0) + result += 360; + + return result; + } +} +/*--------------------------------------------------------------------------*/ + + +GfxFont::GfxFont() { + _fontNumber = 50; + _numChars = 0; + _bpp = 0; + _fontData = NULL; + _fillFlag = false; +} + +GfxFont::~GfxFont() { + DEALLOCATE(_fontData); +} + +/** + * Sets the current active font number + * + * @fontNumber New font number + */ +void GfxFont::setFontNumber(uint32 fontNumber) { + if ((_fontNumber == fontNumber) && (_fontData)) + return; + + DEALLOCATE(_fontData); + + _fontNumber = fontNumber; + + _fontData = _vm->_tSageManager->getResource(RES_FONT, _fontNumber, 0, true); + if (!_fontData) + _fontData = _vm->_dataManager->getResource(RES_FONT, _fontNumber, 0); + + _numChars = READ_LE_UINT16(_fontData + 4); + _fontSize.y = READ_LE_UINT16(_fontData + 6); + _fontSize.x = READ_LE_UINT16(_fontData + 8); + _bpp = READ_LE_UINT16(_fontData + 10); +} + +/** + * Returns the width of the given specified character + * + * @ch Character to return width of + */ +int GfxFont::getCharWidth(char ch) { + assert(_numChars > 0); + uint32 charOffset = READ_LE_UINT32(_fontData + 12 + (uint8)ch * 4); + return _fontData[charOffset] & 0x1f; +} + +/** + * Returns the width of the given string in the current font + * + * @s String to return the width of + * @numChars Number of characters within the string to use + */ +int GfxFont::getStringWidth(const char *s, int numChars) { + assert(_numChars > 0); + int width = 0; + + for (; numChars > 0; --numChars, ++s) { + uint32 charOffset = READ_LE_UINT32(_fontData + 12 + (uint8)*s * 4); + int charWidth = _fontData[charOffset] & 0x1f; + + width += charWidth; + } + + return width; +} + +/** + * Returns the width of the given string in the current font + * + * @s String to return the width of + */ +int GfxFont::getStringWidth(const char *s) { + return getStringWidth(s, strlen(s)); +} + +/** + * Returns the maximum number of characters for words that will fit into a given width + * + * @s Message to be analysed + * @maxWidth Maximum allowed width + */ +int GfxFont::getStringFit(const char *&s, int maxWidth) { + const char *nextWord = NULL; + const char *sStart = s; + int numChars = 1; + int strWidth = 1; + char nextChar; + + for (;;) { + nextChar = *s++; + + if ((nextChar == '\r') || (nextChar == '\0')) + break; + + // Check if it's a word end + if (nextChar == ' ') { + nextWord = s; + } + + strWidth = getStringWidth(sStart, numChars); + if (strWidth > maxWidth) { + if (nextWord) { + s = nextWord; + nextChar = ' '; + } + break; + } + + ++numChars; + } + + int totalChars = s - sStart; + if (nextChar == '\0') + --s; + if ((nextChar == ' ') || (nextChar == '\r') || (nextChar == '\0')) + --totalChars; + + return totalChars; +} + +/** + * Fills out the passed rect with the dimensions of a given string word-wrapped to a + * maximum specified width + * + * @s Message to be analysed + * @bounds Rectangle to put output size into + * @maxWidth Maximum allowed line width in pixels + */ +void GfxFont::getStringBounds(const char *s, Rect &bounds, int maxWidth) { + if (maxWidth == 0) { + // No maximum width, so set bounds for a single line + bounds.set(0, 0, getStringWidth(s), getHeight()); + } else { + int numLines = 0; + int lineWidth = 0; + + // Loop to figure out the number of lines required, and the maximum line width + while (*s) { + const char *msg = s; + int numChars = getStringFit(msg, maxWidth); + lineWidth = MAX(lineWidth, getStringWidth(s, numChars)); + + s = msg; + ++numLines; + } + + bounds.set(0, 0, lineWidth, numLines * getHeight()); + } +} + +/** + * Writes out a character at the currently set position using the active font + * + * @ch Character to display + */ +int GfxFont::writeChar(const char ch) { + assert((_fontData != NULL) && ((uint8)ch < _numChars)); + uint32 charOffset = READ_LE_UINT32(_fontData + 12 + (uint8)ch * 4); + int charWidth = _fontData[charOffset] & 0x1f; + int charHeight = (READ_LE_UINT16(_fontData + charOffset) >> 5) & 0x3f; + int yOffset = (_fontData[charOffset + 1] >> 3) & 0x1f; + const uint8 *dataP = &_fontData[charOffset + 2]; + + // Lock the surface for access + Graphics::Surface surfacePtr = _gfxManager->lockSurface(); + + Rect charRect; + charRect.set(0, 0, charWidth, _fontSize.y); + charRect.translate(_topLeft.x + _position.x, _topLeft.y + _position.y + yOffset); + + if (_fillFlag) + surfacePtr.fillRect(charRect, _colours.background); + + charRect.bottom = charRect.top + charHeight; + + // Display the character + int bitCtr = 0; + uint8 v = 0; + for (int yp = charRect.top; yp < charRect.bottom; ++yp) { + byte *destP = (byte *)surfacePtr.getBasePtr(charRect.left, yp); + + for (int xs = 0; xs < charRect.width(); ++xs, ++destP) { + // Get the next colour index to use + if ((bitCtr % 8) == 0) v = *dataP++; + int colIndex = 0; + for (int subCtr = 0; subCtr < _bpp; ++subCtr, ++bitCtr) { + colIndex = (colIndex << 1) | (v & 0x80 ? 1 : 0); + v <<= 1; + } + + switch (colIndex) { + //case 0: *destP = _colours.background; break; + case 1: *destP = _colours.foreground; break; + case 2: *destP = _colours2.background; break; + case 3: *destP = _colours2.foreground; break; + } + } + } + + _position.x += charWidth; + _gfxManager->unlockSurface(); + return charWidth; +} + +/** + * Writes the specified number of characters from the specified string at the current text position + * + * @s String to display + * @numChars Number of characters to print + */ +void GfxFont::writeString(const char *s, int numChars) { + // Lock the surface for access + _gfxManager->lockSurface(); + + while ((numChars-- > 0) && (*s != '\0')) { + writeChar(*s); + ++s; + } + + // Release the surface lock + _gfxManager->unlockSurface(); +} + +/** + * Writes the the specified string at the current text position + * + * @s String to display + */ +void GfxFont::writeString(const char *s) { + writeString(s, strlen(s)); +} + +/** + * Writes a specified string within a given area with support for word wrapping and text alignment types + * + * @s String to display + * @bounds Bounds to display the text within + * @align Text alignment mode + */ +void GfxFont::writeLines(const char *s, const Rect &bounds, TextAlign align) { + int lineNum = 0; + + // Lock the surface for access + _gfxManager->lockSurface(); + + while (*s) { + const char *msgP = s; + int numChars = getStringFit(msgP, bounds.width()); + + _position.y = bounds.top + lineNum * getHeight(); + + switch (align) { + case ALIGN_RIGHT: + // Right aligned text + _position.x = bounds.right - getStringWidth(s, numChars); + writeString(s, numChars); + break; + + case ALIGN_CENTRE: + // Center aligned text + _position.x = bounds.left + (bounds.width() / 2) - (getStringWidth(s, numChars) / 2); + writeString(s, numChars); + break; + + case ALIGN_JUSTIFIED: { + // Justified text + // Get the number of words in the string portion + int charCtr = 0, numWords = 0; + while (charCtr < numChars) { + if (s[charCtr] == ' ') + ++numWords; + ++charCtr; + } + // If end of string, count final word + if (*msgP == '\0') + ++numWords; + + // Display the words of the string + int spareWidth = bounds.width() - getStringWidth(s, numChars); + charCtr = 0; + _position.x = bounds.left; + + while (charCtr < numChars) { + writeChar(s[charCtr]); + if ((numWords > 0) && (s[charCtr] == ' ')) { + int separationWidth = spareWidth / numWords; + spareWidth -= separationWidth; + --numWords; + _position.x += separationWidth; + } + + ++charCtr; + } + break; + } + + case ALIGN_LEFT: + default: + // Standard text + _position.x = bounds.left; + writeString(s, numChars); + break; + } + + // Next line + s = msgP; + ++lineNum; + } + + // Release the surface lock + _gfxManager->unlockSurface(); +} + +/*--------------------------------------------------------------------------*/ + +GfxFontBackup::GfxFontBackup() { + _edgeSize = _globals->gfxManager()._font._edgeSize; + _position = _globals->gfxManager()._font._position; + _colours = _globals->gfxManager()._font._colours; + _fontNumber = _globals->gfxManager()._font._fontNumber; +} + +GfxFontBackup::~GfxFontBackup() { + _globals->gfxManager()._font.setFontNumber(_fontNumber); + _globals->gfxManager()._font._edgeSize = _edgeSize; + _globals->gfxManager()._font._position = _position; + _globals->gfxManager()._font._colours = _colours; +} + + +} // End of namespace tSage |