Added mouse support to filter_t and filter_chain_t.

[vlc] / include / vlc_mouse.h

diff --git a/include/vlc_mouse.h b/include/vlc_mouse.h
new file mode 100644 (file)
index 0000000..dff2129
--- /dev/null
+++ b/include/vlc_mouse.h
@@ -0,0 +1,145 @@
+/*****************************************************************************
+ * vlc_mouse.h: mouse related structures and functions
+ *****************************************************************************
+ * Copyright (C) 2009 Laurent Aimar
+ * $Id$
+ *
+ * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifndef _VLC_MOUSE_H
+#define _VLC_MOUSE_H 1
+
+/**
+ * Mouse button
+ */
+enum
+{
+       MOUSE_BUTTON_LEFT,
+       MOUSE_BUTTON_CENTER,
+       MOUSE_BUTTON_RIGHT,
+       MOUSE_BUTTON_WHEEL_UP,
+       MOUSE_BUTTON_WHEEL_DOWN,
+};
+
+/**
+ * Mouse state
+ */
+typedef struct
+{
+    /* Coordinate */
+    int i_x;
+    int i_y;
+    /* Mask of pressed button */
+    int i_pressed;
+    /* Is double clicked */
+    bool b_double_click;
+} vlc_mouse_t;
+
+static inline void vlc_mouse_Init( vlc_mouse_t *p_mouse )
+{
+    p_mouse->i_x = 0;
+    p_mouse->i_y = 0;
+    p_mouse->i_pressed = 0;
+    p_mouse->b_double_click = false;
+}
+
+/* */
+static inline void vlc_mouse_SetPressed( vlc_mouse_t *p_mouse,
+                                         int i_button )
+{
+    p_mouse->i_pressed |= 1 << i_button;
+}
+static inline void vlc_mouse_SetReleased( vlc_mouse_t *p_mouse,
+                                          int i_button )
+{
+    p_mouse->i_pressed &= ~(1 << i_button);
+}
+static inline void vlc_mouse_SetPosition( vlc_mouse_t *p_mouse,
+                                          int i_x, int i_y )
+{
+    p_mouse->i_x = i_x;
+    p_mouse->i_y = i_y;
+}
+
+/* */
+static inline bool vlc_mouse_IsPressed( const vlc_mouse_t *p_mouse,
+                                        int i_button )
+{
+    return ( p_mouse->i_pressed & (1 << i_button) ) != 0;
+}
+static inline bool vlc_mouse_IsLeftPressed( const vlc_mouse_t *p_mouse )
+{
+    return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_LEFT );
+}
+static inline bool vlc_mouse_IsCenterPressed( const vlc_mouse_t *p_mouse )
+{
+    return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_CENTER );
+}
+static inline bool vlc_mouse_IsRightPressed( const vlc_mouse_t *p_mouse )
+{
+    return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_RIGHT );
+}
+static inline bool vlc_mouse_IsWheelUpPressed( const vlc_mouse_t *p_mouse )
+{
+    return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_WHEEL_UP );
+}
+static inline bool vlc_mouse_IsWheelDownPressed( const vlc_mouse_t *p_mouse )
+{
+    return vlc_mouse_IsPressed( p_mouse, MOUSE_BUTTON_WHEEL_DOWN );
+}
+static inline void vlc_mouse_GetMotion( int *pi_x, int *pi_y,
+                                        const vlc_mouse_t *p_old,
+                                        const vlc_mouse_t *p_new )
+{
+    *pi_x = p_new->i_x - p_old->i_x;
+    *pi_y = p_new->i_y - p_old->i_y;
+}
+
+/* */
+static inline bool vlc_mouse_HasChanged( const vlc_mouse_t *p_old,
+                                         const vlc_mouse_t *p_new )
+{
+    return p_old->i_x != p_new->i_x || p_old->i_x != p_new->i_x ||
+           p_old->i_pressed != p_new->i_pressed;
+}
+static inline bool vlc_mouse_HasMoved( const vlc_mouse_t *p_old,
+                                       const vlc_mouse_t *p_new )
+{
+    return p_old->i_x != p_new->i_x || p_old->i_y != p_new->i_y;
+}
+static inline bool vlc_mouse_HasButton( const vlc_mouse_t *p_old,
+                                        const vlc_mouse_t *p_new )
+{
+    return p_old->i_pressed != p_new->i_pressed;
+}
+static inline bool vlc_mouse_HasPressed( const vlc_mouse_t *p_old,
+                                         const vlc_mouse_t *p_new,
+                                         int i_button )
+{
+    const int i_mask = 1 << i_button;
+    return (p_old->i_pressed & i_mask) == 0 && (p_new->i_pressed & i_mask);
+}
+static inline bool vlc_mouse_HasReleased( const vlc_mouse_t *p_old,
+                                          const vlc_mouse_t *p_new,
+                                          int i_button )
+{
+    const int i_mask = 1 << i_button;
+    return (p_old->i_pressed & i_mask) && (p_new->i_pressed & i_mask) == 0;
+}
+#endif /* _VLC_MOUSE_H */
+