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-rw-r--r--src/CMakeLists.txt2
-rw-r--r--src/graphics.cpp41
-rw-r--r--src/graphics.h22
-rw-r--r--src/gui/widgets/desktop.cpp27
-rw-r--r--src/openglgraphics.cpp67
-rw-r--r--src/openglgraphics.h9
-rw-r--r--src/resources/image.cpp39
-rw-r--r--src/resources/image.h16
-rw-r--r--src/resources/resourcemanager.cpp13
-rw-r--r--src/resources/resourcemanager.h9
-rw-r--r--src/resources/sdlrescalefacility.cpp486
-rw-r--r--src/resources/sdlrescalefacility.h52
12 files changed, 776 insertions, 7 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 15109185..43726f9d 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -304,6 +304,8 @@ SET(SRCS
resources/resource.h
resources/resourcemanager.cpp
resources/resourcemanager.h
+ resources/sdlrescalefacility.h
+ resources/sdlrescalefacility.cpp
resources/soundeffect.h
resources/soundeffect.cpp
resources/spritedef.h
diff --git a/src/graphics.cpp b/src/graphics.cpp
index 58f643e9..b84e0bf6 100644
--- a/src/graphics.cpp
+++ b/src/graphics.cpp
@@ -120,11 +120,47 @@ bool Graphics::drawImage(Image *image, int x, int y)
return drawImage(image, 0, 0, x, y, image->mBounds.w, image->mBounds.h);
}
+bool Graphics::drawRescaledImage(Image *image, int srcX, int srcY,
+ int dstX, int dstY,
+ int width, int height,
+ int desiredWidth, int desiredHeight,
+ bool useColor)
+{
+ // Check that preconditions for blitting are met.
+ if (!mScreen || !image) return false;
+ if (!image->mImage) return false;
+
+ Image *tmpImage = image->SDLgetScaledImage(desiredWidth, desiredHeight);
+ bool returnValue = false;
+ if (!tmpImage) return false;
+ if (!tmpImage->mImage) return false;
+
+ dstX += mClipStack.top().xOffset;
+ dstY += mClipStack.top().yOffset;
+
+ srcX += image->mBounds.x;
+ srcY += image->mBounds.y;
+
+ SDL_Rect dstRect;
+ SDL_Rect srcRect;
+ dstRect.x = dstX; dstRect.y = dstY;
+ srcRect.x = srcX; srcRect.y = srcY;
+ srcRect.w = width;
+ srcRect.h = height;
+
+ returnValue = !(SDL_BlitSurface(tmpImage->mImage, &srcRect, mScreen, &dstRect) < 0);
+
+ delete tmpImage;
+
+ return returnValue;
+}
+
bool Graphics::drawImage(Image *image, int srcX, int srcY, int dstX, int dstY,
int width, int height, bool)
{
// Check that preconditions for blitting are met.
- if (!mScreen || !image || !image->mImage) return false;
+ if (!mScreen || !image) return false;
+ if (!image->mImage) return false;
dstX += mClipStack.top().xOffset;
dstY += mClipStack.top().yOffset;
@@ -154,7 +190,8 @@ void Graphics::drawImage(gcn::Image const *image, int srcX, int srcY,
void Graphics::drawImagePattern(Image *image, int x, int y, int w, int h)
{
// Check that preconditions for blitting are met.
- if (!mScreen || !image || !image->mImage) return;
+ if (!mScreen || !image) return;
+ if (!image->mImage) return;
const int iw = image->getWidth();
const int ih = image->getHeight();
diff --git a/src/graphics.h b/src/graphics.h
index d0e70c24..eca7e1a5 100644
--- a/src/graphics.h
+++ b/src/graphics.h
@@ -105,6 +105,28 @@ class Graphics : public gcn::SDLGraphics
int dstX, int dstY, int width, int height);
/**
+ * Draws a resclaled version of the image
+ */
+ bool drawRescaledImage(Image *image, int srcX, int srcY,
+ int dstX, int dstY,
+ int width, int height,
+ int desiredWidth, int desiredHeight)
+ { return drawRescaledImage(image, srcX, srcY,
+ dstX, dstY,
+ width, height,
+ desiredWidth, desiredHeight,
+ false); };
+
+ /**
+ * Draws a resclaled version of the image
+ */
+ virtual bool drawRescaledImage(Image *image, int srcX, int srcY,
+ int dstX, int dstY,
+ int width, int height,
+ int desiredWidth, int desiredHeight,
+ bool useColor = false);
+
+ /**
* Blits an image onto the screen.
*
* @return <code>true</code> if the image was blitted properly
diff --git a/src/gui/widgets/desktop.cpp b/src/gui/widgets/desktop.cpp
index a4164bcc..6633d2ce 100644
--- a/src/gui/widgets/desktop.cpp
+++ b/src/gui/widgets/desktop.cpp
@@ -74,9 +74,14 @@ void Desktop::draw(gcn::Graphics *graphics)
if (mWallpaper)
{
- g->drawImage(mWallpaper,
+ if (!mWallpaper->isAnOpenGLOne())
+ g->drawImage(mWallpaper,
(getWidth() - mWallpaper->getWidth()) / 2,
(getHeight() - mWallpaper->getHeight()) / 2);
+ else
+ g->drawRescaledImage(mWallpaper, 0, 0, 0, 0,
+ mWallpaper->getWidth(), mWallpaper->getHeight(),
+ getWidth(), getHeight(), false);
}
Container::draw(graphics);
@@ -87,13 +92,27 @@ void Desktop::setBestFittingWallpaper()
const std::string wallpaperName =
Wallpaper::getWallpaper(getWidth(), getHeight());
- Image *temp = ResourceManager::getInstance()->getImage(wallpaperName);
+ Image *nWallPaper = ResourceManager::getInstance()->getImage(wallpaperName);
- if (temp)
+ if (nWallPaper)
{
if (mWallpaper)
mWallpaper->decRef();
- mWallpaper = temp;
+
+ if (!nWallPaper->isAnOpenGLOne() && (nWallPaper->getWidth() != getWidth()
+ || nWallPaper->getHeight() != getHeight()))
+ {
+ // We rescale to obtain a fullscreen wallpaper...
+ Image *newRsclWlPpr = nWallPaper->SDLgetScaledImage(getWidth(), getHeight());
+ std::string idPath = nWallPaper->getIdPath();
+
+ // We replace the resource in the resource manager
+ nWallPaper->decRef();
+ ResourceManager::getInstance()->addResource(idPath, newRsclWlPpr);
+ mWallpaper = newRsclWlPpr;
+ }
+ else
+ mWallpaper = nWallPaper;
}
else
{
diff --git a/src/openglgraphics.cpp b/src/openglgraphics.cpp
index b9d837ad..5c9e2049 100644
--- a/src/openglgraphics.cpp
+++ b/src/openglgraphics.cpp
@@ -140,6 +140,42 @@ static inline void drawQuad(Image *image,
}
}
+static inline void drawRescaledQuad(Image *image,
+ int srcX, int srcY, int dstX, int dstY,
+ int width, int height,
+ int desiredWidth, int desiredHeight)
+{
+ if (image->getTextureType() == GL_TEXTURE_2D)
+ {
+ // Find OpenGL normalized texture coordinates.
+ float texX1 = srcX / (float) image->getTextureWidth();
+ float texY1 = srcY / (float) image->getTextureHeight();
+ float texX2 = (srcX + width) / (float) image->getTextureWidth();
+ float texY2 = (srcY + height) / (float) image->getTextureHeight();
+
+ glTexCoord2f(texX1, texY1);
+ glVertex2i(dstX, dstY);
+ glTexCoord2f(texX2, texY1);
+ glVertex2i(dstX + desiredWidth, dstY);
+ glTexCoord2f(texX2, texY2);
+ glVertex2i(dstX + desiredWidth, dstY + desiredHeight);
+ glTexCoord2f(texX1, texY2);
+ glVertex2i(dstX, dstY + desiredHeight);
+ }
+ else
+ {
+ glTexCoord2i(srcX, srcY);
+ glVertex2i(dstX, dstY);
+ glTexCoord2i(srcX + width, srcY);
+ glVertex2i(dstX + desiredWidth, dstY);
+ glTexCoord2i(srcX + width, srcY + height);
+ glVertex2i(dstX + desiredWidth, dstY + desiredHeight);
+ glTexCoord2i(srcX, srcY + height);
+ glVertex2i(dstX, dstY + desiredHeight);
+ }
+}
+
+
bool OpenGLGraphics::drawImage(Image *image, int srcX, int srcY,
int dstX, int dstY,
int width, int height, bool useColor)
@@ -168,6 +204,37 @@ bool OpenGLGraphics::drawImage(Image *image, int srcX, int srcY,
return true;
}
+bool OpenGLGraphics::drawRescaledImage(Image *image, int srcX, int srcY,
+ int dstX, int dstY,
+ int width, int height,
+ int desiredWidth, int desiredHeight,
+ bool useColor)
+{
+ if (!image)
+ return false;
+
+ srcX += image->mBounds.x;
+ srcY += image->mBounds.y;
+
+ if (!useColor)
+ glColor4f(1.0f, 1.0f, 1.0f, image->mAlpha);
+
+ glBindTexture(Image::mTextureType, image->mGLImage);
+
+ setTexturingAndBlending(true);
+
+ // Draw a textured quad.
+ glBegin(GL_QUADS);
+ drawRescaledQuad(image, srcX, srcY, dstX, dstY, width, height,
+ desiredWidth, desiredHeight);
+ glEnd();
+
+ if (!useColor)
+ glColor4ub(mColor.r, mColor.g, mColor.b, mColor.a);
+
+ return true;
+}
+
/* Optimising the functions that Graphics::drawImagePattern would call,
* so that glBegin...glEnd are outside the main loop. */
void OpenGLGraphics::drawImagePattern(Image *image, int x, int y, int w, int h)
diff --git a/src/openglgraphics.h b/src/openglgraphics.h
index dc748804..3553cac3 100644
--- a/src/openglgraphics.h
+++ b/src/openglgraphics.h
@@ -46,6 +46,15 @@ class OpenGLGraphics : public Graphics
int width, int height,
bool useColor);
+ /**
+ * Draws a resclaled version of the image
+ */
+ bool drawRescaledImage(Image *image, int srcX, int srcY,
+ int dstX, int dstY,
+ int width, int height,
+ int desiredWidth, int desiredHeight,
+ bool useColor);
+
void drawImagePattern(Image *image,
int x, int y,
int w, int h);
diff --git a/src/resources/image.cpp b/src/resources/image.cpp
index 0c542a8b..66f87ccb 100644
--- a/src/resources/image.cpp
+++ b/src/resources/image.cpp
@@ -26,6 +26,7 @@
#include "log.h"
#include <SDL_image.h>
+#include "resources/sdlrescalefacility.h"
#ifdef USE_OPENGL
bool Image::mUseOpenGL = false;
@@ -289,6 +290,15 @@ void Image::unload()
#endif
}
+bool Image::isAnOpenGLOne() const
+{
+#ifdef USE_OPENGL
+ return mUseOpenGL;
+#else
+ return false;
+#endif
+}
+
Image *Image::getSubImage(int x, int y, int width, int height)
{
// Create a new clipped sub-image
@@ -395,6 +405,34 @@ float Image::getAlpha() const
return mAlpha;
}
+Image* Image::SDLgetScaledImage(unsigned int width, unsigned int height)
+{
+ // No scaling on incorrect new values.
+ if (width == 0 || height == 0)
+ return NULL;
+
+ // No scaling when there is ... no different given size ...
+ if (width == getWidth() && height == getHeight())
+ return NULL;
+
+ Image* scaledImage = NULL;
+ SDL_Surface* scaledSurface = NULL;
+
+ if (mImage)
+ {
+ scaledSurface = _SDLzoomSurface(mImage,
+ (double) width / getWidth(),
+ (double) height / getHeight(),
+ 1);
+
+ // The load function takes of the SDL<->OpenGL implementation
+ // and about freeing the given SDL_surface*.
+ if (scaledSurface)
+ scaledImage = load(scaledSurface);
+ }
+ return scaledImage;
+}
+
#ifdef USE_OPENGL
void Image::setLoadAsOpenGL(bool useOpenGL)
{
@@ -469,4 +507,3 @@ Image *SubImage::getSubImage(int x, int y, int w, int h)
{
return mParent->getSubImage(mBounds.x + x, mBounds.y + y, w, h);
}
-
diff --git a/src/resources/image.h b/src/resources/image.h
index 4422fcc8..dc06a5f3 100644
--- a/src/resources/image.h
+++ b/src/resources/image.h
@@ -88,6 +88,16 @@ class Image : public Resource
static Image *load(SDL_Surface *);
/**
+ * Gets an scaled instance of an image.
+ *
+ * @param width The desired width of the scaled image.
+ * @param height The desired height of the scaled image.
+ *
+ * @return A new Image* object.
+ */
+ Image* SDLgetScaledImage(unsigned int width, unsigned int height);
+
+ /**
* Frees the resources created by SDL.
*/
virtual void unload();
@@ -105,6 +115,12 @@ class Image : public Resource
{ return mBounds.h; }
/**
+ * Tells if the image was loade using OpenGL or SDL
+ * @return true if OpenGL, false if SDL.
+ */
+ bool isAnOpenGLOne() const;
+
+ /**
* Creates a new image with the desired clipping rectangle.
*
* @return <code>NULL</code> if creation failed and a valid
diff --git a/src/resources/resourcemanager.cpp b/src/resources/resourcemanager.cpp
index 0b8d6c35..bc3267da 100644
--- a/src/resources/resourcemanager.cpp
+++ b/src/resources/resourcemanager.cpp
@@ -214,6 +214,19 @@ std::string ResourceManager::getPath(const std::string &file)
return path;
}
+bool ResourceManager::addResource(const std::string &idPath,
+ Resource* resource)
+{
+ if (resource)
+ {
+ resource->incRef();
+ resource->mIdPath = idPath;
+ mResources[idPath] = resource;
+ return true;
+ }
+ return false;
+}
+
Resource *ResourceManager::get(const std::string &idPath, generator fun,
void *data)
{
diff --git a/src/resources/resourcemanager.h b/src/resources/resourcemanager.h
index b2ad3069..88fd60fc 100644
--- a/src/resources/resourcemanager.h
+++ b/src/resources/resourcemanager.h
@@ -125,6 +125,15 @@ class ResourceManager
Resource *load(const std::string &path, loader fun);
/**
+ * Adds a preformatted resource to the resource map.
+ *
+ * @param path The file name.
+ * @param Resource The Resource to add.
+ * @return true if successfull, false otherwise.
+ */
+ bool addResource(const std::string &idPath, Resource* resource);
+
+ /**
* Copies a file from one place to another (useful for extracting
* raw files from a zip archive, for example)
*
diff --git a/src/resources/sdlrescalefacility.cpp b/src/resources/sdlrescalefacility.cpp
new file mode 100644
index 00000000..cc478483
--- /dev/null
+++ b/src/resources/sdlrescalefacility.cpp
@@ -0,0 +1,486 @@
+/*
+ * The Mana World
+ * Copyright (C) 2004 The Mana World Development Team
+ *
+ * This file is part of The Mana World.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the Low GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Source code taken from:
+ *
+ * SDL_rotozoom - rotozoomer
+ *
+ * LGPL (c) A. Schiffler
+ *
+ */
+
+#include "sdlrescalefacility.h"
+
+#define VALUE_LIMIT 0.001
+
+typedef struct tColorRGBA {
+Uint8 r;
+Uint8 g;
+Uint8 b;
+Uint8 a;
+} tColorRGBA;
+
+void zoomSurfaceSize(int width, int height, double zoomx, double zoomy, int *dstwidth, int *dstheight)
+{
+ /*
+ * Sanity check zoom factors
+ */
+ if (zoomx < VALUE_LIMIT) {
+ zoomx = VALUE_LIMIT;
+ }
+ if (zoomy < VALUE_LIMIT) {
+ zoomy = VALUE_LIMIT;
+ }
+
+ /*
+ * Calculate target size
+ */
+ *dstwidth = (int) ((double) width * zoomx);
+ *dstheight = (int) ((double) height * zoomy);
+ if (*dstwidth < 1) {
+ *dstwidth = 1;
+ }
+ if (*dstheight < 1) {
+ *dstheight = 1;
+ }
+}
+
+int zoomSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int flipx, int flipy, int smooth)
+{
+ int x, y, sx, sy, *sax, *say, *csax, *csay, csx, csy, ex, ey, t1, t2, sstep, lx, ly;
+ tColorRGBA *c00, *c01, *c10, *c11, *cswap;
+ tColorRGBA *sp, *csp, *dp;
+ int dgap;
+
+ /*
+ * Variable setup
+ */
+ if (smooth) {
+ /*
+ * For interpolation: assume source dimension is one pixel
+ */
+ /*
+ * smaller to avoid overflow on right and bottom edge.
+ */
+ sx = (int) (65536.0 * (float) (src->w - 1) / (float) dst->w);
+ sy = (int) (65536.0 * (float) (src->h - 1) / (float) dst->h);
+ } else {
+ sx = (int) (65536.0 * (float) src->w / (float) dst->w);
+ sy = (int) (65536.0 * (float) src->h / (float) dst->h);
+ }
+
+ /*
+ * Allocate memory for row increments
+ */
+ if ((sax = (int *) malloc((dst->w + 1) * sizeof(Uint32))) == NULL) {
+ return (-1);
+ }
+ if ((say = (int *) malloc((dst->h + 1) * sizeof(Uint32))) == NULL) {
+ free(sax);
+ return (-1);
+ }
+
+ /*
+ * Precalculate row increments
+ */
+ sp = csp = (tColorRGBA *) src->pixels;
+ dp = (tColorRGBA *) dst->pixels;
+
+ if (flipx) csp += (src->w-1);
+ if (flipy) csp += (src->pitch*(src->h-1));
+
+ csx = 0;
+ csax = sax;
+ for (x = 0; x <= dst->w; x++) {
+ *csax = csx;
+ csax++;
+ csx &= 0xffff;
+ csx += sx;
+ }
+ csy = 0;
+ csay = say;
+ for (y = 0; y <= dst->h; y++) {
+ *csay = csy;
+ csay++;
+ csy &= 0xffff;
+ csy += sy;
+ }
+
+ dgap = dst->pitch - dst->w * 4;
+
+ /*
+ * Switch between interpolating and non-interpolating code
+ */
+ if (smooth) {
+
+ /*
+ * Interpolating Zoom
+ */
+
+ /*
+ * Scan destination
+ */
+ ly = 0;
+ csay = say;
+ for (y = 0; y < dst->h; y++) {
+ /*
+ * Setup color source pointers
+ */
+ c00 = csp;
+ c01 = csp;
+ c01++;
+ c10 = (tColorRGBA *) ((Uint8 *) csp + src->pitch);
+ c11 = c10;
+ c11++;
+ csax = sax;
+ if (flipx) {
+ cswap = c00; c00=c01; c01=cswap;
+ cswap = c10; c10=c11; c11=cswap;
+ }
+ if (flipy) {
+ cswap = c00; c00=c10; c10=cswap;
+ cswap = c01; c01=c11; c11=cswap;
+ }
+ lx = 0;
+ for (x = 0; x < dst->w; x++) {
+ /*
+ * Interpolate colors
+ */
+ ex = (*csax & 0xffff);
+ ey = (*csay & 0xffff);
+ t1 = ((((c01->r - c00->r) * ex) >> 16) + c00->r) & 0xff;
+ t2 = ((((c11->r - c10->r) * ex) >> 16) + c10->r) & 0xff;
+ dp->r = (((t2 - t1) * ey) >> 16) + t1;
+ t1 = ((((c01->g - c00->g) * ex) >> 16) + c00->g) & 0xff;
+ t2 = ((((c11->g - c10->g) * ex) >> 16) + c10->g) & 0xff;
+ dp->g = (((t2 - t1) * ey) >> 16) + t1;
+ t1 = ((((c01->b - c00->b) * ex) >> 16) + c00->b) & 0xff;
+ t2 = ((((c11->b - c10->b) * ex) >> 16) + c10->b) & 0xff;
+ dp->b = (((t2 - t1) * ey) >> 16) + t1;
+ t1 = ((((c01->a - c00->a) * ex) >> 16) + c00->a) & 0xff;
+ t2 = ((((c11->a - c10->a) * ex) >> 16) + c10->a) & 0xff;
+ dp->a = (((t2 - t1) * ey) >> 16) + t1;
+
+ /*
+ * Advance source pointers
+ */
+ csax++;
+ sstep = (*csax >> 16);
+ lx += sstep;
+ if (lx >= src->w) sstep = 0;
+ if (flipx) sstep = -sstep;
+ c00 += sstep;
+ c01 += sstep;
+ c10 += sstep;
+ c11 += sstep;
+ /*
+ * Advance destination pointer
+ */
+ dp++;
+ }
+ /*
+ * Advance source pointer
+ */
+ csay++;
+ sstep = (*csay >> 16);
+ ly += sstep;
+ if (ly >= src->h) sstep = 0;
+ sstep *= src->pitch;
+ if (flipy) sstep = -sstep;
+ csp = (tColorRGBA *) ((Uint8 *) csp + sstep);
+
+ /*
+ * Advance destination pointers
+ */
+ dp = (tColorRGBA *) ((Uint8 *) dp + dgap);
+ }
+ } else {
+
+ /*
+ * Non-Interpolating Zoom
+ */
+
+ csay = say;
+ for (y = 0; y < dst->h; y++) {
+ sp = csp;
+ csax = sax;
+ for (x = 0; x < dst->w; x++) {
+ /*
+ * Draw
+ */
+ *dp = *sp;
+ /*
+ * Advance source pointers
+ */
+ csax++;
+ sstep = (*csax >> 16);
+ if (flipx) sstep = -sstep;
+ sp += sstep;
+ /*
+ * Advance destination pointer
+ */
+ dp++;
+ }
+ /*
+ * Advance source pointer
+ */
+ csay++;
+ sstep = (*csay >> 16) * src->pitch;
+ if (flipy) sstep = -sstep;
+ csp = (tColorRGBA *) ((Uint8 *) csp + sstep);
+
+ /*
+ * Advance destination pointers
+ */
+ dp = (tColorRGBA *) ((Uint8 *) dp + dgap);
+ }
+ }
+
+ /*
+ * Remove temp arrays
+ */
+ free(sax);
+ free(say);
+
+ return (0);
+}
+
+
+
+int zoomSurfaceY(SDL_Surface * src, SDL_Surface * dst, int flipx, int flipy)
+{
+ Uint32 x, y, sx, sy, *sax, *say, *csax, *csay, csx, csy, sstep;
+ Uint8 *sp, *dp, *csp;
+ int dgap;
+
+ /*
+ * Variable setup
+ */
+ sx = (Uint32) (65536.0 * (float) src->w / (float) dst->w);
+ sy = (Uint32) (65536.0 * (float) src->h / (float) dst->h);
+
+
+ /*
+ * Allocate memory for row increments
+ */
+ if ((sax = (Uint32 *) malloc((dst->w + 1) * sizeof(Uint32))) == NULL) {
+ return (-1);
+ }
+ if ((say = (Uint32 *) malloc((dst->h + 1) * sizeof(Uint32))) == NULL) {
+ free(sax);
+ return (-1);
+ }
+
+ /*
+ * Pointer setup
+ */
+ sp = csp = (Uint8 *) src->pixels;
+ dp = (Uint8 *) dst->pixels;
+ dgap = dst->pitch - dst->w;
+
+ if (flipx) csp += (src->w-1);
+ if (flipy) csp = ( (Uint8*)csp + src->pitch*(src->h-1) );
+
+ /*
+ * Precalculate row increments
+ */
+ csx = 0;
+ csax = sax;
+ for (x = 0; x <= dst->w; x++) {
+ *csax = csx;
+ csax++;
+ csx &= 0xffff;
+ csx += sx;
+ }
+ csy = 0;
+ csay = say;
+ for (y = 0; y <= dst->h; y++) {
+ *csay = csy;
+ csay++;
+ csy &= 0xffff;
+ csy += sy;
+ }
+
+
+ /*
+ * Draw
+ */
+ csay = say;
+ for (y = 0; y < dst->h; y++) {
+ csax = sax;
+ sp = csp;
+ for (x = 0; x < dst->w; x++) {
+ /*
+ * Draw
+ */
+ *dp = *sp;
+ /*
+ * Advance source pointers
+ */
+ csax++;
+ sstep = (*csax >> 16);
+ if (flipx) sstep = -sstep;
+ sp += sstep;
+ /*
+ * Advance destination pointer
+ */
+ dp++;
+ }
+ /*
+ * Advance source pointer (for row)
+ */
+ csay++;
+ sstep = (*csay >> 16) * src->pitch;
+ if (flipy) sstep = -sstep;
+ csp = ((Uint8 *) csp + sstep);
+
+ /*
+ * Advance destination pointers
+ */
+ dp += dgap;
+ }
+
+ /*
+ * Remove temp arrays
+ */
+ free(sax);
+ free(say);
+
+ return (0);
+}
+
+
+
+SDL_Surface *_SDLzoomSurface(SDL_Surface * src, double zoomx, double zoomy, int smooth)
+{
+ SDL_Surface *rz_src;
+ SDL_Surface *rz_dst;
+ int dstwidth, dstheight;
+ int is32bit;
+ int i, src_converted;
+ int flipx, flipy;
+
+ /*
+ * Sanity check
+ */
+ if (src == NULL)
+ return (NULL);
+
+ /*
+ * Determine if source surface is 32bit or 8bit
+ */
+ is32bit = (src->format->BitsPerPixel == 32);
+ if ((is32bit) || (src->format->BitsPerPixel == 8)) {
+ /*
+ * Use source surface 'as is'
+ */
+ rz_src = src;
+ src_converted = 0;
+ } else {
+ /*
+ * New source surface is 32bit with a defined RGBA ordering
+ */
+ rz_src =
+ SDL_CreateRGBSurface(SDL_SWSURFACE, src->w, src->h, 32,
+#if SDL_BYTEORDER == SDL_LIL_ENDIAN
+ 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000
+#else
+ 0xff000000, 0x00ff0000, 0x0000ff00, 0x000000ff
+#endif
+ );
+ SDL_BlitSurface(src, NULL, rz_src, NULL);
+ src_converted = 1;
+ is32bit = 1;
+ }
+
+ flipx = (zoomx<0.0);
+ if (flipx) zoomx = -zoomx;
+ flipy = (zoomy<0.0);
+ if (flipy) zoomy = -zoomy;
+
+ /* Get size if target */
+ zoomSurfaceSize(rz_src->w, rz_src->h, zoomx, zoomy, &dstwidth, &dstheight);
+
+ /*
+ * Alloc space to completely contain the zoomed surface
+ */
+ rz_dst = NULL;
+ if (is32bit) {
+ /*
+ * Target surface is 32bit with source RGBA/ABGR ordering
+ */
+ rz_dst =
+ SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 32,
+ rz_src->format->Rmask, rz_src->format->Gmask,
+ rz_src->format->Bmask, rz_src->format->Amask);
+ } else {
+ /*
+ * Target surface is 8bit
+ */
+ rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 8, 0, 0, 0, 0);
+ }
+
+ /*
+ * Lock source surface
+ */
+ SDL_LockSurface(rz_src);
+ /*
+ * Check which kind of surface we have
+ */
+ if (is32bit) {
+ /*
+ * Call the 32bit transformation routine to do the zooming (using alpha)
+ */
+ zoomSurfaceRGBA(rz_src, rz_dst, flipx, flipy, smooth);
+ /*
+ * Turn on source-alpha support
+ */
+ SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255);
+ } else {
+ /*
+ * Copy palette and colorkey info
+ */
+ for (i = 0; i < rz_src->format->palette->ncolors; i++) {
+ rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i];
+ }
+ rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors;
+ /*
+ * Call the 8bit transformation routine to do the zooming
+ */
+ zoomSurfaceY(rz_src, rz_dst, flipx, flipy);
+ SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, rz_src->format->colorkey);
+ }
+ /*
+ * Unlock source surface
+ */
+ SDL_UnlockSurface(rz_src);
+
+ /*
+ * Cleanup temp surface
+ */
+ if (src_converted) {
+ SDL_FreeSurface(rz_src);
+ }
+
+ /*
+ * Return destination surface
+ */
+ return (rz_dst);
+}
diff --git a/src/resources/sdlrescalefacility.h b/src/resources/sdlrescalefacility.h
new file mode 100644
index 00000000..597e6933
--- /dev/null
+++ b/src/resources/sdlrescalefacility.h
@@ -0,0 +1,52 @@
+/*
+ * The Mana World
+ * Copyright (C) 2004 The Mana World Development Team
+ *
+ * This file is part of The Mana World.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the Low GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Source code taken from:
+ *
+ * SDL_rotozoom - rotozoomer
+ *
+ * LGPL (c) A. Schiffler
+ *
+ */
+
+#ifndef SDLRESCALEFACILITY_H
+#define SDLRESCALEFACILITY_H
+
+#include <SDL.h>
+#include "image.h"
+
+/**
+ * _SDLzoomSurface is internally used by Image::getScaledImage() to provide
+ * a rescaled copy of its internal mImage member.
+ *
+ * @see Image::getScaledImage() for more details
+ *
+ * @param src the original surface to rescale
+ * @param zoomx the zoom factor used to rescale the surface horizontally. 1.0 doesn't rescale.
+ * A value lesser than 1.O shrink the image.
+ * @param zoomy the zoom factor used to rescale the surface vertically.
+ * @param smooth transform the scaled surface into a 32bit aliased image to smooth the rescaling.
+ *
+ * @return SDL_Surface The rescaled surface.
+ */
+
+SDL_Surface *_SDLzoomSurface(SDL_Surface * src, double zoomx, double zoomy, int smooth);
+
+#endif \ No newline at end of file
generated by cgit v1.2.3-60-g2f50 (git 2.42.0) at 2024-07-01 11:11:47 +0000