Cleanup & implementation of #32

glava.c

@@ -199,7 +199,7 @@ int main(int argc, char** argv) {
     bool verbose = false;
     bool copy_mode = false;
     
-    int c, idx, n = 0;
+    int c, idx;
     while ((c = getopt_long(argc, argv, opt_str, p_opts, &idx)) != -1) {
         switch (c) {
         case 'v': verbose   = true;   break;
@@ -259,7 +259,7 @@ int main(int argc, char** argv) {
     }
     
     pthread_t thread;
-    int thread_id = pthread_create(&thread, NULL, input_pulse, (void*) &audio);
+    pthread_create(&thread, NULL, input_pulse, (void*) &audio);
     
     float lb[r->bufsize_request], rb[r->bufsize_request];
     while (r->alive) {

glfw_wcb.c

@@ -119,7 +119,7 @@ static void set_visible(GLFWwindow* w, bool visible) {
     else         glfwHideWindow(w);
 }
 
-static bool swap_buffers(GLFWwindow* w) {
+static void swap_buffers(GLFWwindow* w) {
     glfwSwapBuffers(w);
     glfwPollEvents();
 }

glx_wcb.c

@@ -15,6 +15,7 @@
 
 #include <X11/Xlib.h>
 #include <X11/extensions/Xrender.h>
+#include <X11/extensions/shape.h>
 #include <X11/Xatom.h>
 
 #include <glad/glad.h>
@@ -126,7 +127,7 @@ static void* create_and_bind(const char* name, const char* class,
             if (!fmt || (transparent ? fmt->direct.alphaMask == 0 : fmt->direct.alphaMask != 0))
                 continue;
             
-            if (best < 0 || samp_buf && samples > samp) {
+            if (best < 0 || (samp_buf && samples > samp)) {
                 best = t;
                 samp = samples;
             }
@@ -158,8 +159,10 @@ static void* create_and_bind(const char* name, const char* class,
         abort();
     }
 
+    bool desktop = false;
+    
     if (type)
-        xwin_settype(&wcb_glx, w, type);
+        desktop = xwin_settype(&wcb_glx, w, type);
 
     for (size_t t = 0; t < states_sz; ++t)
         xwin_addstate(&wcb_glx, w, states[t]);
@@ -181,6 +184,20 @@ static void* create_and_bind(const char* name, const char* class,
     Atom dwin = XInternAtom(display, "WM_DELETE_WINDOW", false);
     XSetWMProtocols(display, w->w, &dwin, 1);
     
+    // XReparentWindow(display, w->w, DefaultRootWindow(display), 0, 0);
+    
+    /* Eliminate the window's effective region */
+    if (desktop){
+        int ignored;
+        if (XShapeQueryExtension(display, &ignored, &ignored)) {
+            Region region;
+            if ((region = XCreateRegion())) {
+                XShapeCombineRegion(display, w->w, ShapeInput, 0, 0, region, ShapeSet);
+                XDestroyRegion(region);
+            }
+        }
+    }
+
     glXCreateContextAttribsARBProc glXCreateContextAttribsARB = NULL;
     glXSwapIntervalEXTProc glXSwapIntervalEXT = NULL;
     glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)
@@ -255,7 +272,6 @@ static void get_fbsize(struct glxwin* w, int* d, int* h) {
 }
 
 static void get_pos(struct glxwin* w, int* x, int* y) {
-    XWindowAttributes a;
     Window _ignored;
     XTranslateCoordinates(display, w->w, DefaultRootWindow(display), 0, 0, x, y, &_ignored);
 }

render.c

@@ -506,7 +506,6 @@ void transform_smooth(struct gl_data* d, void** udaa, void* data) {
     for (int t = 0; t < asz; ++t) {
         float
             db  = log(t), /* buffer index on log scale */
-            v   = b[t],   /* value at this position */
             avg = 0;      /* adj value averages (weighted) */
         /* Calculate real indexes for sampling at this position, since the
            distance is specified in scalar values */
@@ -592,7 +591,7 @@ void transform_wrange(struct gl_data* d, void** _, void* data) {
 
 void transform_window(struct gl_data* d, void** _, void* data) {
     struct gl_sampler_data* s = (struct gl_sampler_data*) data;
-    float* b = s->buf, w;
+    float* b = s->buf;
     size_t sz = s->sz, t;
     
     for (t = 0; t < sz; ++t) {
@@ -765,7 +764,7 @@ struct renderer* rd_new(const char** paths, const char* entry,
     };
 
     if (!gl->wcb) {
-        fprintf(stderr, "Invalid window creation backend selected: '%s'\n", gl->wcb);
+        fprintf(stderr, "Invalid window creation backend selected: '%s'\n", backend);
         abort();
     }
     

render.h

@@ -31,7 +31,7 @@ struct gl_wcb {
                                 int x, int y,
                                 int version_major, int version_minor);
     bool     (*should_close)   (void* ptr);
-    bool     (*swap_buffers)   (void* ptr);
+    void     (*swap_buffers)   (void* ptr);
     void     (*get_pos)        (void* ptr, int* x, int* y);
     void     (*get_fbsize)     (void* ptr, int* w, int* h);
     void     (*set_geometry)   (void* ptr, int x, int y, int w, int h);

xwin.c

@@ -100,9 +100,7 @@ bool xwin_should_render(struct renderer* rd) {
     return ret;
 }
 
-/* Set window types defined by the EWMH standard, possible values:
-   -> "desktop", "dock", "toolbar", "menu", "utility", "splash", "dialog", "normal" */
-static void xwin_changeatom(struct gl_wcb* wcb, void* impl, const char* type,
+static bool xwin_changeatom(struct gl_wcb* wcb, void* impl, const char* type,
                             const char* atom, const char* fmt, int mode) {
     Window w = wcb->get_x11_window(impl);
     Display* d = wcb->get_x11_display();
@@ -116,14 +114,19 @@ static void xwin_changeatom(struct gl_wcb* wcb, void* impl, const char* type,
         default:          formatted[t] = c;
         }
     }
+    bool ret = !strcmp(type, "DESKTOP");
     char buf[256];
     snprintf(buf, sizeof(buf), fmt, formatted);
     Atom desk = XInternAtom(d, buf, false);
     XChangeProperty(d, w, wtype, XA_ATOM, 32, mode, (unsigned char*) &desk, 1);
+    return ret;
 }
 
-void xwin_settype(struct gl_wcb* wcb, void* impl, const char* type) {
-    xwin_changeatom(wcb, impl, type, "_NET_WM_WINDOW_TYPE", "_NET_WM_WINDOW_TYPE_%s", PropModeReplace); 
+/* Set window types defined by the EWMH standard, possible values:
+   -> "desktop", "dock", "toolbar", "menu", "utility", "splash", "dialog", "normal" */
+bool xwin_settype(struct gl_wcb* wcb, void* impl, const char* type) {
+    return xwin_changeatom(wcb, impl, type, "_NET_WM_WINDOW_TYPE",
+                           "_NET_WM_WINDOW_TYPE_%s", PropModeReplace); 
 }
 
 void xwin_addstate(struct gl_wcb* wcb, void* impl, const char* state) {
@@ -160,14 +163,13 @@ unsigned int xwin_copyglbg(struct renderer* rd, unsigned int tex) {
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     
-    bool use_shm = true;
-    
     int x, y, w, h;
     rd_get_wcb(rd)->get_fbsize(rd_get_impl_window(rd), &w, &h);
     rd_get_wcb(rd)->get_pos(rd_get_impl_window(rd), &x, &y);
     XColor c;
     Display* d = rd_get_wcb(rd)->get_x11_display();
     Drawable src = get_drawable(d, find_desktop(rd));
+    bool use_shm = XShmQueryExtension(d);
 
     /* Obtain section of root pixmap */
     
@@ -191,7 +193,7 @@ unsigned int xwin_copyglbg(struct renderer* rd, unsigned int tex) {
         XShmGetImage(d, src, image, x, y, AllPlanes);
     } else {
         image = XGetImage(d, src, x, y, (unsigned int) w, (unsigned int) h,
-                  ZPixmap, AllPlanes);
+                          AllPlanes, ZPixmap);
     }
 
     /* Try to convert pixel bit depth to OpenGL storage format. The following formats\

xwin.h

@@ -1,5 +1,5 @@
 
 bool xwin_should_render(struct renderer* rd);
-void xwin_settype(struct gl_wcb* wcb, void* impl, const char* type);
+bool xwin_settype(struct gl_wcb* wcb, void* impl, const char* type);
 void xwin_addstate(struct gl_wcb* wcb, void* impl, const char* state);
 unsigned int xwin_copyglbg(struct renderer* rd, unsigned int texture);