Merged Ryan's SDL-gui-backend branch.

Adds three APIs, and implements them on X11, Cocoa, and Windows:

- SDL_CaptureMouse()
- SDL_GetGlobalMouseState()
- SDL_SetWindowHitTest()

test/Makefile.in

@@ -23,6 +23,7 @@ TARGETS = \
 	testgles$(EXE) \
 	testgles2$(EXE) \
 	testhaptic$(EXE) \
+	testhittesting$(EXE) \
 	testrumble$(EXE) \
 	testhotplug$(EXE) \
 	testthread$(EXE) \
@@ -108,6 +109,9 @@ testintersections$(EXE): $(srcdir)/testintersections.c
 testrelative$(EXE): $(srcdir)/testrelative.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
 
+testhittesting$(EXE): $(srcdir)/testhittesting.c
+	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
+
 testdraw2$(EXE): $(srcdir)/testdraw2.c
 	$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
 

test/testhittesting.c

@@ -0,0 +1,134 @@
+#include <stdio.h>
+#include "SDL.h"
+
+/* !!! FIXME: rewrite this to be wired in to test framework. */
+
+#define RESIZE_BORDER 20
+
+const SDL_Rect drag_areas[] = {
+    { 20, 20, 100, 100 },
+    { 200, 70, 100, 100 },
+    { 400, 90, 100, 100 }
+};
+
+static const SDL_Rect *areas = drag_areas;
+static int numareas = SDL_arraysize(drag_areas);
+
+static SDL_HitTestResult
+hitTest(SDL_Window *window, const SDL_Point *pt, void *data)
+{
+    int i;
+    int w, h;
+
+    for (i = 0; i < numareas; i++) {
+        if (SDL_PointInRect(pt, &areas[i])) {
+            SDL_Log("HIT-TEST: DRAGGABLE\n");
+            return SDL_HITTEST_DRAGGABLE;
+        }
+    }
+
+    SDL_GetWindowSize(window, &w, &h);
+
+    #define REPORT_RESIZE_HIT(name) { \
+        SDL_Log("HIT-TEST: RESIZE_" #name "\n"); \
+        return SDL_HITTEST_RESIZE_##name; \
+    }
+
+    if (pt->x < RESIZE_BORDER && pt->y < RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(TOPLEFT);
+    } else if (pt->x > RESIZE_BORDER && pt->x < w - RESIZE_BORDER && pt->y < RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(TOP);
+    } else if (pt->x > w - RESIZE_BORDER && pt->y < RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(TOPRIGHT);
+    } else if (pt->x > w - RESIZE_BORDER && pt->y > RESIZE_BORDER && pt->y < h - RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(RIGHT);
+    } else if (pt->x > w - RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(BOTTOMRIGHT);
+    } else if (pt->x < w - RESIZE_BORDER && pt->x > RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(BOTTOM);
+    } else if (pt->x < RESIZE_BORDER && pt->y > h - RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(BOTTOMLEFT);
+    } else if (pt->x < RESIZE_BORDER && pt->y < h - RESIZE_BORDER && pt->y > RESIZE_BORDER) {
+        REPORT_RESIZE_HIT(LEFT);
+    }
+
+    SDL_Log("HIT-TEST: NORMAL\n");
+    return SDL_HITTEST_NORMAL;
+}
+
+
+int main(int argc, char **argv)
+{
+    int done = 0;
+    SDL_Window *window;
+    SDL_Renderer *renderer;
+
+    /* !!! FIXME: check for errors. */
+    SDL_Init(SDL_INIT_VIDEO);
+    window = SDL_CreateWindow("Drag the red boxes", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 640, 480, SDL_WINDOW_BORDERLESS | SDL_WINDOW_RESIZABLE);
+    renderer = SDL_CreateRenderer(window, -1, 0);
+
+    if (SDL_SetWindowHitTest(window, hitTest, NULL) == -1) {
+        SDL_Log("Enabling hit-testing failed!\n");
+        SDL_Quit();
+        return 1;
+    }
+
+    while (!done)
+    {
+        SDL_Event e;
+        int nothing_to_do = 1;
+
+        SDL_SetRenderDrawColor(renderer, 0, 0, 127, 255);
+        SDL_RenderClear(renderer);
+        SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
+        SDL_RenderFillRects(renderer, areas, SDL_arraysize(drag_areas));
+        SDL_RenderPresent(renderer);
+
+        while (SDL_PollEvent(&e)) {
+            nothing_to_do = 0;
+
+            switch (e.type)
+            {
+                case SDL_MOUSEBUTTONDOWN:
+                    SDL_Log("button down!\n");
+                    break;
+
+                case SDL_MOUSEBUTTONUP:
+                    SDL_Log("button up!\n");
+                    break;
+
+                case SDL_WINDOWEVENT:
+                    if (e.window.event == SDL_WINDOWEVENT_MOVED) {
+                        SDL_Log("Window event moved to (%d, %d)!\n", (int) e.window.data1, (int) e.window.data2);
+                    }
+                    break;
+
+                case SDL_KEYDOWN:
+                    if (e.key.keysym.sym == SDLK_ESCAPE) {
+                        done = 1;
+                    } else if (e.key.keysym.sym == SDLK_x) {
+                        if (!areas) {
+                            areas = drag_areas;
+                            numareas = SDL_arraysize(drag_areas);
+                        } else {
+                            areas = NULL;
+                            numareas = 0;
+                        }
+                    }
+                    break;
+
+                case SDL_QUIT:
+                    done = 1;
+                    break;
+            }
+        }
+
+        if (nothing_to_do) {
+            SDL_Delay(50);
+        }
+    }
+
+    SDL_Quit();
+    return 0;
+}