From 673246be0c4d85d1aba6865e2451bed19bb01f43 Mon Sep 17 00:00:00 2001
From: ulion <ulion@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Sat, 22 Dec 2007 06:14:38 +0000
Subject: OSD menu support mouse selection.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25489 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libmenu/menu.c      | 10 ++++++++++
 libmenu/menu.h      |  4 ++++
 libmenu/menu_list.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
 libmenu/vf_menu.c   |  2 ++
 4 files changed, 61 insertions(+)

(limited to 'libmenu')

diff --git a/libmenu/menu.c b/libmenu/menu.c
index 358202b715..879e977510 100644
--- a/libmenu/menu.c
+++ b/libmenu/menu.c
@@ -68,6 +68,10 @@ struct menu_def_st {
   char* args;
 };
 
+double menu_mouse_x = -1.0;
+double menu_mouse_y = -1.0;
+int menu_mouse_pos_updated = 0;
+
 static struct MPContext *menu_ctx = NULL;
 static menu_def_t* menu_list = NULL;
 static int menu_count = 0;
@@ -324,6 +328,12 @@ void menu_draw(menu_t* menu,mp_image_t* mpi) {
     menu->draw(menu,mpi);
 }
 
+void menu_update_mouse_pos(double x, double y) {
+  menu_mouse_x = x;
+  menu_mouse_y = y;
+  menu_mouse_pos_updated = 1;
+}
+
 void menu_read_cmd(menu_t* menu,int cmd) {
   if(menu->read_cmd)
     menu->read_cmd(menu,cmd);
diff --git a/libmenu/menu.h b/libmenu/menu.h
index 8690d4a579..d05749f440 100644
--- a/libmenu/menu.h
+++ b/libmenu/menu.h
@@ -44,6 +44,7 @@ typedef struct menu_info_s {
 #define MENU_CMD_END 8
 #define MENU_CMD_PAGE_UP 9
 #define MENU_CMD_PAGE_DOWN 10
+#define MENU_CMD_CLICK 11
 
 /// Global init/uninit
 int menu_init(struct MPContext *mpctx, char* cfg_file);
@@ -60,6 +61,9 @@ void menu_read_key(menu_t* menu,int cmd);
 //// Default implementation
 int menu_dflt_read_key(menu_t* menu,int cmd);
 
+/// Receive mouse position events.
+void menu_update_mouse_pos(double x, double y);
+
 /////////// Helpers
 
 #define MENU_TEXT_TOP	(1<<0)
diff --git a/libmenu/menu_list.c b/libmenu/menu_list.c
index 990095d368..c49bbd6e4d 100644
--- a/libmenu/menu_list.c
+++ b/libmenu/menu_list.c
@@ -18,6 +18,16 @@
 #define IMPL 1
 #include "menu_list.h"
 
+extern double menu_mouse_x;
+extern double menu_mouse_y;
+extern int menu_mouse_pos_updated;
+static int mouse_x;
+static int mouse_y;
+static int selection_x;
+static int selection_y;
+static int selection_w;
+static int selection_h;
+
 #define mpriv (menu->priv)
 
 void menu_list_draw(menu_t* menu,mp_image_t* mpi) {
@@ -127,9 +137,39 @@ void menu_list_draw(menu_t* menu,mp_image_t* mpi) {
   
   dx = x < 0 ? (mpi->w - need_w) / 2 : x;
   bx = x < 0 ? (mpi->w - bg_w) / 2 : x - mpriv->minb;
+
+  // If mouse moved, try to update selected menu item by the mouse position.
+  if (menu_mouse_pos_updated) {
+    mouse_x = menu_mouse_x * mpi->width;
+    mouse_y = menu_mouse_y * mpi->height;
+    if (mouse_x >= bx && mouse_x < bx + bg_w) {
+      int by = dy + y - mpriv->vspace / 2;
+      int max_by = dh + y + mpriv->vspace / 2;
+      if (mouse_y >= by && mouse_y < max_by) {
+        int cur_no = (mouse_y - by) / line_h;
+        list_entry_t* e = m;
+        for (i = 0; e != NULL; e = e->next) {
+          if (e->hide) continue;
+          if (i == cur_no) {
+            mpriv->current = e;
+            break;
+          }
+          ++i;
+        }
+      }
+    }
+    menu_mouse_pos_updated = 0;
+  }
+
   for( ; m != NULL && dy + vo_font->height < dh ; m = m->next ) {
     if(m->hide) continue;
     if(m == mpriv->current) {
+      // Record rectangle of current selection box.
+      selection_x = bx;
+      selection_y = dy + y - mpriv->vspace / 2;
+      selection_w = bg_w;
+      selection_h = line_h;
+
       if(mpriv->ptr_bg >= 0)
         menu_draw_box(mpi,mpriv->ptr_bg,mpriv->ptr_bg_alpha,
                       bx, dy + y - mpriv->vspace / 2,
@@ -211,6 +251,11 @@ void menu_list_read_cmd(menu_t* menu,int cmd) {
     menu->show = 0;
     menu->cl = 1;
     break;
+  case MENU_CMD_CLICK:
+    if (mouse_x >= selection_x && mouse_x < selection_x + selection_w &&
+        mouse_y >= selection_y && mouse_y < selection_y + selection_h)
+      menu_read_cmd(menu, MENU_CMD_OK);
+    break;
   }    
 }
 
diff --git a/libmenu/vf_menu.c b/libmenu/vf_menu.c
index 29d9e2c55c..7a4902a990 100644
--- a/libmenu/vf_menu.c
+++ b/libmenu/vf_menu.c
@@ -81,6 +81,8 @@ static int cmd_filter(mp_cmd_t* cmd, int paused, struct vf_priv_s * priv) {
       menu_read_cmd(priv->current,MENU_CMD_PAGE_UP);
     else if(strcmp(arg,"pagedown") == 0)
       menu_read_cmd(priv->current,MENU_CMD_PAGE_DOWN);
+    else if(strcmp(arg,"click") == 0)
+      menu_read_cmd(priv->current,MENU_CMD_CLICK);
     else if(strcmp(arg,"hide") == 0 || strcmp(arg,"toggle") == 0)
       priv->current->show = 0;
     else
-- 
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