move rect to new file

inc/ztoolkit/math.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2020 Alexandros Theodotou <alex at zrythm dot org>
+ *
+ * This file is part of ZToolkit
+ *
+ * ZToolkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ZToolkit 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Affero Public License
+ * along with ZToolkit.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ZTOOLKIT_MATH_H__
+#define __ZTOOLKIT_MATH_H__
+
+#include <float.h>
+#include <math.h>
+
+#define math_doubles_equal(a,b) \
+  (a > b ? a - b < DBL_EPSILON : b - a < DBL_EPSILON)
+
+#endif

inc/ztoolkit/rect.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 Alexandros Theodotou <alex at zrythm dot org>
+ *
+ * This file is part of ZToolkit
+ *
+ * ZToolkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ZToolkit 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Affero Public License
+ * along with ZToolkit.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __ZTOOLKIT_RECT_H__
+#define __ZTOOLKIT_RECT_H__
+
+/**
+ * Wrapper over PuglRect.
+ */
+typedef struct ZtkRect
+{
+  double x;
+  double y;
+  double width;
+  double height;
+} ZtkRect;
+
+int
+ztk_rect_is_equal (
+  ZtkRect * src,
+  ZtkRect * dest);
+
+void
+ztk_rect_copy (
+  ZtkRect * dest,
+  ZtkRect * src);
+
+#endif

inc/ztoolkit/types.h

@@ -20,15 +20,4 @@
 #ifndef __ZTOOLKIT_TYPES_H__
 #define __ZTOOLKIT_TYPES_H__
 
-/**
- * Wrapper over PuglRect.
- */
-typedef struct ZtkRect
-{
-  double x;
-  double y;
-  double width;
-  double height;
-} ZtkRect;
-
 #endif

inc/ztoolkit/ztk.h

@@ -21,9 +21,11 @@
 #define __Z_TOOLKIT_ZTK_H__
 
 #include "ztoolkit_config.h"
+#include "math.h"
 #include "log.h"
-#include "types.h"
+#include "rect.h"
 #include "rsvg.h"
+#include "types.h"
 #include "ztk_widget.h"
 #include "ztk_app.h"
 #include "ztk_button.h"

inc/ztoolkit/ztk_widget.h

@@ -26,7 +26,7 @@
 #ifndef __Z_TOOLKIT_ZTK_WIDGET_H__
 #define __Z_TOOLKIT_ZTK_WIDGET_H__
 
-#include <ztoolkit/types.h>
+#include "rect.h"
 
 #include <cairo.h>
 #include <pugl/pugl.h>

src/meson.build

@@ -17,6 +17,7 @@
 
 ztoolkit_srcs = files([
   'log.c',
+  'rect.c',
   'rsvg.c',
   'ztk_app.c',
   'ztk_button.c',

src/rect.c

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2020 Alexandros Theodotou <alex at zrythm dot org>
+ *
+ * This file is part of ZToolkit
+ *
+ * ZToolkit is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * ZToolkit 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Affero Public License
+ * along with ZToolkit.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "ztoolkit/math.h"
+#include "ztoolkit/rect.h"
+
+int
+ztk_rect_is_equal (
+  ZtkRect * src,
+  ZtkRect * dest)
+{
+  return
+    math_doubles_equal (
+      src->x, dest->x) &&
+    math_doubles_equal (
+      src->y, dest->y) &&
+    math_doubles_equal (
+      src->width, dest->width) &&
+    math_doubles_equal (
+      src->height, dest->height);
+}
+
+void
+ztk_rect_copy (
+  ZtkRect * dest,
+  ZtkRect * src)
+{
+  dest->x = src->x;
+  dest->y = src->y;
+  dest->width = src->width;
+  dest->height = src->height;
+}