Added logging and X11 Keymap translation. Also various bugfixes.

src/gui/gui.c

@@ -1,6 +1,4 @@
-
 #include <pgpl.h>
-#include <stdio.h>
 #include <stdlib.h>
 
 static bool pgpl_gui_internal_event_loop(PGPL_Window *window,
@@ -37,7 +35,8 @@ static bool pgpl_gui_internal_event_loop(PGPL_Window *window,
     pgpl_gui_destroy(gui, true);
     return false;
   } else if (event_type == PGPL_WINDOW_EVENT_ERROR) {
-    printf("PGPL_Window has experienced an unexpected error!\nExiting...");
+    pgpl_log_message(PGPL_LOG_LEVEL_ERROR,
+                     "PGPL_Window has experienced an unexpected error!");
   } else {
     uint32_t width, height;
     uint32_t length = pgpl_vector_get_length(gui->widgets);

src/gui/widgets/button.c

@@ -45,24 +45,21 @@ static void event(PGPL_GuiWidget *widget, PGPL_GuiTheme *theme, PGPL_Gui *gui,
       if (event_type == PGPL_WINDOW_EVENT_MOUSE_PRESS &&
           event_data->input_event.key == PGPL_WINDOW_MOUSE_BUTTON_LEFT) {
         widget->gui_color = PGPL_GUI_STATUS_COLOR_ACTIVE;
-        return;
       } else if (event_type == PGPL_WINDOW_EVENT_MOUSE_RELEASE &&
                  event_data->input_event.key == PGPL_WINDOW_MOUSE_BUTTON_LEFT) {
         if (widget->gui_color == PGPL_GUI_STATUS_COLOR_ACTIVE) {
           button_widget->click_callback(gui->app_data);
         }
         widget->gui_color = PGPL_GUI_STATUS_COLOR_HOVER;
-        return;
       } else {
         if (widget->gui_color != PGPL_GUI_STATUS_COLOR_ACTIVE) {
           widget->gui_color = PGPL_GUI_STATUS_COLOR_HOVER;
         }
-        return;
       }
+    } else {
+      widget->gui_color = PGPL_GUI_STATUS_COLOR_NORMAL;
     }
   }
-
-  widget->gui_color = PGPL_GUI_STATUS_COLOR_NORMAL;
 }
 
 static void destroy(PGPL_GuiWidget *widget) {

src/log.c

@@ -0,0 +1,46 @@
+#include <pgpl.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+extern PGPL_Mutex *pgpl_internal_log_lock;
+
+extern FILE *pgpl_internal_log_file;
+
+static PGPL_LogLevel pgpl_log_internal_minimum_level = PGPL_LOG_LEVEL_ERROR;
+
+void pgpl_log_set_minimum_level(PGPL_LogLevel level) {
+  pgpl_log_internal_minimum_level = level;
+}
+
+void pgpl_log_output_file(FILE *file) { pgpl_internal_log_file = file; }
+
+void pgpl_log_message(PGPL_LogLevel level, const char *format, ...) {
+  va_list args;
+
+  va_start(args, format);
+
+  pgpl_mutex_lock(pgpl_internal_log_lock);
+  if (level >= pgpl_log_internal_minimum_level) {
+    switch (level) {
+    case PGPL_LOG_LEVEL_DEBUG:
+      fprintf(pgpl_internal_log_file, "[DEBUG] ");
+      break;
+    case PGPL_LOG_LEVEL_INFO:
+      fprintf(pgpl_internal_log_file, "[INFO] ");
+      break;
+    case PGPL_LOG_LEVEL_WARN:
+      fprintf(pgpl_internal_log_file, "[WARN] ");
+      break;
+    case PGPL_LOG_LEVEL_ERROR:
+      fprintf(pgpl_internal_log_file, "[ERROR] ");
+      break;
+    }
+
+    vfprintf(pgpl_internal_log_file, format, args);
+    fputc('\n', pgpl_internal_log_file);
+  }
+
+  va_end(args);
+
+  pgpl_mutex_unlock(pgpl_internal_log_lock);
+}

src/pgpl.c

@@ -1,7 +1,16 @@
 #include <pgpl.h>
 
-PGPL_Mutex *render_lock;
+PGPL_Mutex *pgpl_internal_render_lock;
+PGPL_Mutex *pgpl_internal_log_lock;
+FILE *pgpl_internal_log_file;
 
-void pgpl_init(void) { render_lock = pgpl_mutex_create(); }
+void pgpl_init(void) {
+  pgpl_internal_render_lock = pgpl_mutex_create();
+  pgpl_internal_log_lock = pgpl_mutex_create();
+  pgpl_internal_log_file = stderr;
+}
 
-void pgpl_deinit(void) { pgpl_mutex_destroy(render_lock); }
+void pgpl_deinit(void) {
+  pgpl_mutex_destroy(pgpl_internal_render_lock);
+  pgpl_mutex_destroy(pgpl_internal_log_lock);
+}

src/render/font.c

@@ -9,10 +9,6 @@
 #define STBTT_STATIC
 #include <stb/stb_truetype.h>
 
-#ifdef __WIN32__
-#include <windows.h>
-#endif
-
 #define CHAR_AMOUNT 256
 #define BANK_AMOUNT 256
 
@@ -30,26 +26,6 @@ struct PGPL_Font {
   uint8_t *data;
 };
 
-/* Converts a string to a wide string, don't forget to call free() on the
- * returned pointer. */
-static wchar_t *str_to_wstr(const char *str) {
-  size_t length = strlen(str);
-  wchar_t *wstr = malloc((length + 1) * sizeof(*wstr));
-
-  setlocale(LC_ALL, "en_US.UTF-8");
-
-  /* mbstowcs works just fine with UTF-8 strings on most platforms, except on
-   * Windows, where we have to use MultiByteToWideChar to do the exact same
-   * thing. */
-#if defined(__WIN32__)
-  MultiByteToWideChar(CP_UTF8, MB_PRECOMPOSED, str, -1, wstr, length + 1);
-#else
-  mbstowcs(wstr, str, length + 1);
-#endif
-
-  return wstr;
-}
-
 PGPL_Font *pgpl_font_create_from_file(const char *filename,
                                       uint32_t glyph_size) {
   PGPL_Font *font;
@@ -58,7 +34,7 @@ PGPL_Font *pgpl_font_create_from_file(const char *filename,
   uint8_t *font_data;
 
   if (font_file == NULL) {
-    perror("Failed to open font");
+    pgpl_log_message(PGPL_LOG_LEVEL_ERROR, "Failed to open font!");
     return NULL;
   }
 
@@ -158,7 +134,7 @@ void pgpl_font_render_glyph(PGPL_Renderer *renderer, PGPL_Font *font, wchar_t c,
 void pgpl_font_render_string(PGPL_Renderer *renderer, PGPL_Font *font,
                              const char *str, PGPL_Color color, double x,
                              double y, double size) {
-  wchar_t *wstr = str_to_wstr(str);
+  wchar_t *wstr = pgpl_string_to_wide_string(str);
 
   pgpl_font_render_wstring(renderer, font, wstr, color, x, y, size);
 
@@ -213,11 +189,10 @@ void pgpl_font_glyph_dimensions(PGPL_Font *font, wchar_t c, double size,
 }
 
 /* Calculates the coordinates of an entire string. Also returns them in the
- * passed pointers.
- */
+ * passed pointers. */
 void pgpl_font_string_dimensions(PGPL_Font *font, const char *str, double size,
                                  PGPL_Rectangle *rectangle) {
-  wchar_t *wstr = str_to_wstr(str);
+  wchar_t *wstr = pgpl_string_to_wide_string(str);
 
   pgpl_font_wstring_dimensions(font, wstr, size, rectangle);
 

src/render/texture.c

@@ -19,7 +19,8 @@ pgpl_render_create_texture_file_memory(PGPL_Renderer *renderer,
     texture = pgpl_render_create_texture(renderer, data, x, y, filter,
                                          PGPL_TEXTURE_FORMAT_RGBA);
   } else {
-    fprintf(stderr, "Failed to open image: %s\n", stbi_failure_reason());
+    pgpl_log_message(PGPL_LOG_LEVEL_ERROR, "Failed to open image: %s\n",
+                     stbi_failure_reason());
     return NULL;
   }
 
@@ -38,7 +39,8 @@ PGPL_Texture *pgpl_render_create_texture_file(PGPL_Renderer *renderer,
     texture = pgpl_render_create_texture(renderer, data, x, y, filter,
                                          PGPL_TEXTURE_FORMAT_RGBA);
   } else {
-    fprintf(stderr, "Failed to open image: %s\n", stbi_failure_reason());
+    pgpl_log_message(PGPL_LOG_LEVEL_ERROR, "Failed to open image: %s\n",
+                     stbi_failure_reason());
     return NULL;
   }
 

src/string.c

@@ -0,0 +1,26 @@
+#include <locale.h>
+#include <pgpl.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef __WIN32__
+#include <windows.h>
+#endif
+
+wchar_t *pgpl_string_to_wide_string(const char *str) {
+  size_t length = strlen(str);
+  wchar_t *wstr = malloc((length + 1) * sizeof(*wstr));
+
+  setlocale(LC_ALL, "en_US.UTF-8");
+
+  /* mbstowcs works just fine with UTF-8 strings on most platforms, except on
+   * Windows, where we have to use MultiByteToWideChar to do the exact same
+   * thing. */
+#if defined(__WIN32__)
+  MultiByteToWideChar(CP_UTF8, MB_PRECOMPOSED, str, -1, wstr, length + 1);
+#else
+  mbstowcs(wstr, str, length + 1);
+#endif
+
+  return wstr;
+}

src/window/internal.h

@@ -5,7 +5,7 @@
 
 /* This is needed if there are multiple windows open. Created by pgpl_init,
  * destroyed by pgpl_deinit. */
-extern PGPL_Mutex *render_lock;
+extern PGPL_Mutex *pgpl_internal_render_lock;
 
 typedef struct PGPL_WindowShared {
   double scale;

src/window/window-win32.c

@@ -319,13 +319,13 @@ void pgpl_window_reparent_to(PGPL_Window *window, void *parent) {
 void *pgpl_window_get_raw_window(PGPL_Window *window) { return window->hwnd; }
 
 void pgpl_window_internal_start_render(PGPL_Window *window) {
-  pgpl_mutex_lock(render_lock);
+  pgpl_mutex_lock(pgpl_internal_render_lock);
   wglMakeCurrent(window->hdc, window->wgl_context);
 }
 
 void pgpl_window_internal_finish_render(PGPL_Window *window) {
   wglSwapLayerBuffers(window->hdc, WGL_SWAP_MAIN_PLANE);
-  pgpl_mutex_unlock(render_lock);
+  pgpl_mutex_unlock(pgpl_internal_render_lock);
 }
 
 #endif

src/window/window-x11.c

@@ -2,6 +2,7 @@
 #include "internal.h"
 #include <GL/glx.h>
 #include <X11/Xlib.h>
+#include <stdio.h>
 #include <stdlib.h>
 
 struct PGPL_Window {
@@ -144,10 +145,29 @@ void pgpl_window_set_position(PGPL_Window *window, int32_t x, int32_t y) {
   XFlush(window->display);
 }
 
+static int32_t pgpl_window_internal_get_key(XKeyEvent *key_event) {
+  KeySym key_sym;
+  char buffer[32];
+  wchar_t *wbuffer;
+  int32_t character = 0;
+
+  int length =
+      XLookupString(key_event, buffer, sizeof(buffer) - 1, &key_sym, NULL);
+
+  buffer[length] = '\0';
+
+  if (length != 0) {
+    wbuffer = pgpl_string_to_wide_string(buffer);
+    character = wbuffer[0];
+  } else {
+    /* TODO: Handle control characters. */
+  }
+
+  return character;
+}
+
 /* This fetches the event from X11 and translates it to our own format, returns
- * an Error if the Event was unknown.
- *
- * TODO: Translate the keymaps */
+ * an Error if the Event was unknown. */
 PGPL_WindowEventType
 pgpl_window_internal_fetch_window_event(PGPL_Window *window,
                                         PGPL_WindowEventData *event_data) {
@@ -159,7 +179,7 @@ pgpl_window_internal_fetch_window_event(PGPL_Window *window,
       if (event_data != NULL) {
         event_data->input_event.x = event.xkey.x;
         event_data->input_event.y = event.xkey.y;
-        event_data->input_event.key = event.xkey.keycode;
+        event_data->input_event.key = pgpl_window_internal_get_key(&event.xkey);
       }
       return PGPL_WINDOW_EVENT_KEY_PRESS;
       break;
@@ -167,7 +187,7 @@ pgpl_window_internal_fetch_window_event(PGPL_Window *window,
       if (event_data != NULL) {
         event_data->input_event.x = event.xkey.x;
         event_data->input_event.y = event.xkey.y;
-        event_data->input_event.key = event.xkey.keycode;
+        event_data->input_event.key = pgpl_window_internal_get_key(&event.xkey);
       }
       return PGPL_WINDOW_EVENT_KEY_RELEASE;
       break;
@@ -221,12 +241,12 @@ void *pgpl_window_get_raw_window(PGPL_Window *window) {
 }
 
 void pgpl_window_internal_start_render(PGPL_Window *window) {
-  pgpl_mutex_lock(render_lock);
+  pgpl_mutex_lock(pgpl_internal_render_lock);
   glXMakeCurrent(window->display, window->window, window->glx_context);
 }
 
 void pgpl_window_internal_finish_render(PGPL_Window *window) {
   glXSwapBuffers(window->display, window->window);
-  pgpl_mutex_unlock(render_lock);
+  pgpl_mutex_unlock(pgpl_internal_render_lock);
 }
 #endif