Improve a lot list browsing with the mouse not allowing screenshots previews to be...

diff --git a/qcsrc/menu/xonotic/screenshotlist.c b/qcsrc/menu/xonotic/screenshotlist.c
index 0a8575dc0496dc575dca996c35af8989e8a8ddb1..97469227b49f7f96e40cad5896080b2820b14bcf 100644 (file)
--- a/qcsrc/menu/xonotic/screenshotlist.c
+++ b/qcsrc/menu/xonotic/screenshotlist.c
@@ -27,6 +27,9 @@ CLASS(XonoticScreenshotList) EXTENDS(XonoticListBox)
        ATTRIB(XonoticScreenshotList, filterBox, entity, NULL)
        ATTRIB(XonoticScreenshotList, filterTime, float, 0)
 
+       ATTRIB(XonoticScreenshotList, newScreenshotTime, float, 0)
+       ATTRIB(XonoticScreenshotList, prevSelectedItem, float, 0)
+
        ATTRIB(XonoticScreenshotList, screenshotBrowserDialog, entity, NULL)
        ATTRIB(XonoticScreenshotList, screenshotPreview, entity, NULL)
        ATTRIB(XonoticScreenshotList, screenshotViewerDialog, entity, NULL)
@@ -128,8 +131,19 @@ void XonoticScreenshotList_resizeNotify(entity me, vector relOrigin, vector relS
 
 void XonoticScreenshotList_setSelected(entity me, float i)
 {
+       me.prevSelectedItem = me.selectedItem;
        SUPER(XonoticScreenshotList).setSelected(me, i);
-       me.previewScreenshot(me); // load the preview on selection change
+       if (me.pressed && me.selectedItem != me.prevSelectedItem)
+       {
+               // while dragging the scrollbar (or an item)
+               // for a smooth mouse movement do not load immediately the new selected images
+               me.newScreenshotTime = time + 0.2;
+       }
+       else if (time > me.newScreenshotTime)
+       {
+               me.newScreenshotTime = 0;
+               me.previewScreenshot(me); // load the preview on selection change
+       }
 }
 
 void XonoticScreenshotList_drawListBoxItem(entity me, float i, vector absSize, float isSelected)
@@ -186,6 +200,11 @@ void XonoticScreenshotList_draw(entity me)
                ScreenshotList_Filter_Change(me.filterBox, me);
                me.filterTime = 0;
        }
+       if (me.newScreenshotTime && time > me.newScreenshotTime)
+       {
+               me.previewScreenshot(me);
+               me.newScreenshotTime = 0;
+       }
        SUPER(XonoticScreenshotList).draw(me);
 }
 
@@ -239,7 +258,8 @@ float XonoticScreenshotList_keyDown(entity me, float scan, float ascii, float sh
                me.startScreenshot(me);
                return 1;
        }
-       else
-               return SUPER(XonoticScreenshotList).keyDown(me, scan, ascii, shift);
+       if(scan == K_MWHEELUP || scan == K_MWHEELDOWN)
+               me.newScreenshotTime = time + 0.2;
+       return SUPER(XonoticScreenshotList).keyDown(me, scan, ascii, shift);
 }
 #endif