Apply filter mask.

[supertux.git] / lib / video / surface.cpp

diff --git a/lib/video/surface.cpp b/lib/video/surface.cpp
index 57cc4d2..73dc131 100644 (file)
--- a/lib/video/surface.cpp
+++ b/lib/video/surface.cpp
@@ -26,6 +26,7 @@
 #include "SDL_image.h"
 
 #include "../video/surface.h"
+#include "../video/screen.h"
 #include "../app/globals.h"
 #include "../app/setup.h"
 
@@ -173,11 +174,8 @@ Surface::Surface(const std::string& file, int x, int y, int w, int h, bool use_a
 }
 
 Surface::Surface(Color top_background, Color bottom_background, int w_, int h_)
-    : data(top_background, bottom_background, 0, 0), w(0), h(0)
+    : data(top_background, bottom_background, w_, h_), w(0), h(0)
 {
-  // FIXME: Gradient surfaces currently don't accept width/height
-  //        If nonzero values are passed to data.create(), supertux
-  //        crashes.
   impl = data.create();
   if (impl)
   {
@@ -199,6 +197,11 @@ Surface::reload()
   }
 }
 
+void Surface::apply_mask(Color color)
+{
+impl->apply_mask(color);
+}
+
 Surface::~Surface()
 {
 #ifdef DEBUG
@@ -249,6 +252,32 @@ Surface::resize(int w_, int h_)
   }
 }
 
+void
+apply_filter_to_surface(SDL_Surface* surface, int filter, Color color)
+{
+if(filter == MASK_FILTER)
+  {
+  Uint8 r,g,b,a;
+  SDL_Rect rect;
+  rect.w = rect.h = 1;
+  SDL_LockSurface(surface);
+  for(int x = 0; x < surface->w; x++)
+    for(int y = 0; y < surface->h; y++)
+      {
+//    SDL_LockSurface(surface);
+      SDL_GetRGBA(getpixel(surface,x,y), surface->format, &r,&g,&b,&a);
+//    SDL_UnlockSurface(surface);
+      if(a != 0)
+        {
+      putpixel(surface, x,y, color.map_rgba(surface));
+//        rect.x = x; rect.y = y;
+//        SDL_FillRect(surface, &rect, color.map_rgba(surface));
+        }
+      }
+  SDL_UnlockSurface(surface);
+  }
+}
+
 SDL_Surface*
 sdl_surface_part_from_file(const std::string& file, int x, int y, int w, int h,  bool use_alpha)
 {
@@ -373,7 +402,7 @@ sdl_surface_from_gradient(Color top, Color bottom, int w, int h)
 
   sdl_surface = SDL_CreateRGBSurface(screen->flags, w, h,
                     screen->format->BitsPerPixel, screen->format->Rmask,
-                    screen->format->Gmask, screen->format->Bmask, screen->format->Amask);
+                    screen->format->Gmask, screen->format->Bmask, 0);
 
   if(sdl_surface == NULL)
       Termination::abort("Cannot create surface for the gradient", "SURFACE");
@@ -571,7 +600,21 @@ SurfaceOpenGL::draw(float x, float y, Uint8 alpha, Uint32 effect)
 
   glBegin(GL_QUADS);
 
-  if(effect & VERTICAL_FLIP)
+  if(effect & VERTICAL_FLIP & HORIZONTAL_FLIP)
+    {
+    glTexCoord2f(0, 0);
+    glVertex2f((float)w+x, (float)h+y);
+
+    glTexCoord2f((float)w / pw, 0);
+    glVertex2f(x, (float)h+y);
+
+    glTexCoord2f((float)w / pw, (float)h / ph);
+    glVertex2f(x, y);
+
+    glTexCoord2f(0, (float)h / ph);
+    glVertex2f((float)w+x, y);
+    }
+  else if(effect & VERTICAL_FLIP)
     {
     glTexCoord2f(0, 0);
     glVertex2f(x, (float)h+y);
@@ -585,6 +628,20 @@ SurfaceOpenGL::draw(float x, float y, Uint8 alpha, Uint32 effect)
     glTexCoord2f(0, (float)h / ph);
     glVertex2f(x, y);
     }
+  else if(effect & HORIZONTAL_FLIP)
+    {
+    glTexCoord2f(0, 0);
+    glVertex2f((float)w+x, y);
+
+    glTexCoord2f((float)w / pw, 0);
+    glVertex2f(x, y);
+
+    glTexCoord2f((float)w / pw, (float)h / ph);
+    glVertex2f(x, (float)h+y);
+
+    glTexCoord2f(0, (float)h / ph);
+    glVertex2f((float)w+x, (float)h+y);
+    }
   else
     {
     glTexCoord2f(0, 0);
@@ -628,7 +685,21 @@ SurfaceOpenGL::draw_part(float sx, float sy, float x, float y, float w, float h,
 
   glBegin(GL_QUADS);
 
-  if(effect & VERTICAL_FLIP)
+  if(effect & VERTICAL_FLIP & HORIZONTAL_FLIP)
+    {
+    glTexCoord2f(sx / pw, (float)(sy+h) / ph);
+    glVertex2f((float)w+x, (float)h+y);
+
+    glTexCoord2f((sx+w) / pw, (sy+h) / ph);
+    glVertex2f(x, (float)h+y);
+
+    glTexCoord2f((float)(sx + w) / pw, sy / ph);
+    glVertex2f(x, y);
+
+    glTexCoord2f(sx / pw, sy / ph);
+    glVertex2f((float)w+x, y);
+    }
+  else if(effect & VERTICAL_FLIP)
     {
     glTexCoord2f(sx / pw, sy / ph);
     glVertex2f(x, y);
@@ -642,6 +713,20 @@ SurfaceOpenGL::draw_part(float sx, float sy, float x, float y, float w, float h,
     glTexCoord2f(sx / pw, (float)(sy+h) / ph);
     glVertex2f(x, h+y);
     }
+  else if(effect & HORIZONTAL_FLIP)
+    {
+    glTexCoord2f(sx / pw, sy / ph);
+    glVertex2f((float)w+x, y);
+
+    glTexCoord2f((float)(sx + w) / pw, sy / ph);
+    glVertex2f(x, y);
+
+    glTexCoord2f((sx+w) / pw, (sy+h) / ph);
+    glVertex2f(x, (float)h+y);
+
+    glTexCoord2f(sx / pw, (float)(sy+h) / ph);
+    glVertex2f((float)w+x, (float)h+y);
+    }
   else
     {
     glTexCoord2f(sx / pw, (float)(sy+h) / ph);
@@ -665,32 +750,84 @@ SurfaceOpenGL::draw_part(float sx, float sy, float x, float y, float w, float h,
   return 0;
 }
 
-#if 0
 int
-SurfaceOpenGL::draw_stretched(float x, float y, int sw, int sh, Uint8 alpha)
+SurfaceOpenGL::draw_stretched(float x, float y, int sw, int sh, Uint8 alpha, Uint32 effect)
 {
-  float pw = power_of_two(int(this->w));
-  float ph = power_of_two(int(this->h));
+  if(effect & SEMI_TRANSPARENT)
+    alpha = 128;
 
-  glBindTexture(GL_TEXTURE_2D, gl_texture);
+  float pw = power_of_two(sw);
+  float ph = power_of_two(sh);
 
+  if(effect & SEMI_TRANSPARENT)
+    alpha = 128;
+
+  glEnable(GL_TEXTURE_2D);
   glEnable(GL_BLEND);
   glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
   glColor4ub(alpha, alpha, alpha, alpha);
 
-  glEnable(GL_TEXTURE_2D);
-
+  glBindTexture(GL_TEXTURE_2D, gl_texture);
 
   glBegin(GL_QUADS);
-  glTexCoord2f(0, 0);
-  glVertex2f(x, y);
-  glTexCoord2f((float)w / pw, 0);
-  glVertex2f(sw+x, y);
-  glTexCoord2f((float)w / pw, (float)h / ph);  glVertex2f((float)sw+x, (float)sh+y);
-  glVertex2f(sw +x, sh+y);
-  glTexCoord2f(0, (float)h / ph);
-  glVertex2f(x, sh+y);
+
+  if(effect & VERTICAL_FLIP & HORIZONTAL_FLIP)
+    {
+    glTexCoord2f(0, 0);
+    glVertex2f((float)sw+x, (float)sh+y);
+
+    glTexCoord2f((float)w / pw, 0);
+    glVertex2f(x, (float)sh+y);
+
+    glTexCoord2f((float)w / pw, (float)h / ph);
+    glVertex2f(x, y);
+
+    glTexCoord2f(0, (float)h / ph);
+    glVertex2f((float)sw+x, y);
+    }
+  else if(effect & VERTICAL_FLIP)
+    {
+    glTexCoord2f(0, 0);
+    glVertex2f(x, (float)sh+y);
+
+    glTexCoord2f((float)w / pw, 0);
+    glVertex2f((float)sw+x, (float)sh+y);
+
+    glTexCoord2f((float)w / pw, (float)h / ph);
+    glVertex2f((float)sw+x, y);
+    
+    glTexCoord2f(0, (float)h / ph);
+    glVertex2f(x, y);
+    }
+  else if(effect & HORIZONTAL_FLIP)
+    {
+    glTexCoord2f(0, 0);
+    glVertex2f((float)sw+x, y);
+
+    glTexCoord2f((float)w / pw, 0);
+    glVertex2f(x, y);
+
+    glTexCoord2f((float)w / pw, (float)h / ph);
+    glVertex2f(x, (float)sh+y);
+
+    glTexCoord2f(0, (float)h / ph);
+    glVertex2f((float)sw+x, (float)sh+y);
+    }
+  else
+    {
+    glTexCoord2f(0, 0);
+    glVertex2f(x, y);
+
+    glTexCoord2f((float)w / pw, 0);
+    glVertex2f((float)sw+x, y);
+
+    glTexCoord2f((float)w / pw, (float)h / ph);
+    glVertex2f((float)sw+x, (float)sh+y);
+
+    glTexCoord2f(0, (float)h / ph);
+    glVertex2f(x, (float)sh+y);
+    }
   glEnd();
 
   glDisable(GL_TEXTURE_2D);
@@ -698,7 +835,16 @@ SurfaceOpenGL::draw_stretched(float x, float y, int sw, int sh, Uint8 alpha)
 
   return 0;
 }
-#endif
+
+void
+SurfaceOpenGL::apply_mask(Color color)
+{
+  ::apply_filter_to_surface(sdl_surface, MASK_FILTER, color);
+  create_gl(sdl_surface,&gl_texture);
+
+  w = sdl_surface->w;
+  h = sdl_surface->h;
+}
 
 #endif
 
@@ -743,13 +889,29 @@ SurfaceSDL::draw(float x, float y, Uint8 alpha, Uint32 effect)
   if(effect & SEMI_TRANSPARENT)
     alpha = 128;
 
-  if(effect & VERTICAL_FLIP)    // FIXME: feel free to replace this hack
+  if(effect & VERTICAL_FLIP & HORIZONTAL_FLIP)
+    {
+    // FIXME: this hack is damn slow. Just keep it cause it isn't that used.
+    for(float sx = 0; sx < w; sx++)
+      for(float sy = 0; sy < h; sy++)
+        if(draw_part(sx, sy, x+(w-sx), y+(h-sy), 1, 1, alpha, NONE_EFFECT) == -2)
+          return -2;
+    return 0;
+    }
+  else if(effect & VERTICAL_FLIP)    // FIXME: feel free to replace this hack
     {
     for(float sy = 0; sy < h; sy++)
       if(draw_part(0, sy, x, y+(h-sy), w, 1, alpha, NONE_EFFECT) == -2)
         return -2;
     return 0;
     }
+  else if(effect & HORIZONTAL_FLIP)    // FIXME: feel free to replace this hack
+    {
+    for(float sx = 0; sx < w; sx++)
+      if(draw_part(sx, 0, x+(w-sx), y, 1, h, alpha, NONE_EFFECT) == -2)
+        return -2;
+    return 0;
+    }
 
   if(alpha != 255)
     {
@@ -800,13 +962,29 @@ SurfaceSDL::draw_part(float sx, float sy, float x, float y, float w, float h, Ui
   if(effect & SEMI_TRANSPARENT)
     alpha = 128;
 
-  if(effect & VERTICAL_FLIP)    // FIXME: feel free to replace this hack
+  if(effect & VERTICAL_FLIP & HORIZONTAL_FLIP)
+    {
+    // FIXME: this hack is damn slow. Just keep it cause it isn't that used.
+    for(float sx_ = 0; sx_ < w; sx++)
+      for(float sy_ = 0; sy_ < h; sy++)
+        if(draw_part(sx_, sy_, sx+(w-sx_), sy+(h-sy_), 1, 1, alpha, NONE_EFFECT) == -2)
+          return -2;
+    return 0;
+    }
+  else if(effect & VERTICAL_FLIP)    // FIXME: feel free to replace this hack
     {
     for(float sy_ = sy; sy_ < h; sy_++)
       if(draw_part(sx, sy_, x, y+(h-sy_), w, 1, alpha, NONE_EFFECT) == -2)
         return -2;
     return 0;
     }
+  else if(effect & HORIZONTAL_FLIP)    // FIXME: feel free to replace this hack
+    {
+    for(float sx_ = 0; sx_ < w; sx_++)
+      if(draw_part(sx_, 0, sx+(w-sx_), sy, 1, h, alpha, NONE_EFFECT) == -2)
+        return -2;
+    return 0;
+    }
 
   if(alpha != 255)
     {
@@ -839,9 +1017,8 @@ SurfaceSDL::draw_part(float sx, float sy, float x, float y, float w, float h, Ui
   return ret;
 }
 
-#if 0
 int
-SurfaceSDL::draw_stretched(float x, float y, int sw, int sh, Uint8 alpha, bool update)
+SurfaceSDL::draw_stretched(float x, float y, int sw, int sh, Uint8 alpha, Uint32 effect)
 {
   SDL_Rect dest;
 
@@ -850,9 +1027,8 @@ SurfaceSDL::draw_stretched(float x, float y, int sw, int sh, Uint8 alpha, bool u
   dest.w = (int)sw;
   dest.h = (int)sh;
 
-  if(alpha != 255)
-    SDL_SetAlpha(sdl_surface ,SDL_SRCALPHA,alpha);
-
+  if(effect & SEMI_TRANSPARENT)
+    alpha = 128;
 
   SDL_Surface* sdl_surface_copy = SDL_CreateRGBSurface (sdl_surface->flags,
                                   sw, sh, sdl_surface->format->BitsPerPixel,
@@ -863,15 +1039,23 @@ SurfaceSDL::draw_stretched(float x, float y, int sw, int sh, Uint8 alpha, bool u
   SDL_BlitSurface(sdl_surface, NULL, sdl_surface_copy, NULL);
   SDL_SoftStretch(sdl_surface_copy, NULL, sdl_surface_copy, &dest);
 
+  if(alpha != 255)
+    SDL_SetAlpha(sdl_surface_copy,SDL_SRCALPHA,alpha);
+
   int ret = SDL_BlitSurface(sdl_surface_copy,NULL,screen,&dest);
   SDL_FreeSurface(sdl_surface_copy);
 
-  if (update == UPDATE)
-    update_rect(screen, dest.x, dest.y, dest.w, dest.h);
-
   return ret;
 }
-#endif
+
+void
+SurfaceSDL::apply_mask(Color color)
+{
+  ::apply_filter_to_surface(sdl_surface, MASK_FILTER, color);
+
+  w = sdl_surface->w;
+  h = sdl_surface->h;
+}
 
 SurfaceSDL::~SurfaceSDL()
 {}