Add Text class with multiline support

[libs/gltk.git] / source / root.cpp

diff --git a/source/root.cpp b/source/root.cpp
index 6bc5793df6e0c4b5140660a9f96f8d3095e58c5f..0cd7e0f35d20ddb40a713e3d87beee7253bf0433 100644 (file)
--- a/source/root.cpp
+++ b/source/root.cpp
@@ -6,6 +6,10 @@ Distributed under the LGPL
 */
 
 #include <msp/input/keys.h>
+#include <msp/time/units.h>
+#include <msp/time/utils.h>
+#include "label.h"
+#include "style.h"
 #include "root.h"
 
 namespace Msp {
@@ -14,7 +18,9 @@ namespace GLtk {
 Root::Root(const Resources &r, Graphics::Window &w):
        Widget(r),
        Panel(r),
-       window(w)
+       window(w),
+       lbl_tooltip(0),
+       tooltip_target(0)
 {
        set_geometry(Geometry(0, 0, window.get_width(), window.get_height()));
 
@@ -27,6 +33,44 @@ Root::Root(const Resources &r, Graphics::Window &w):
        window.signal_key_release.connect(sigc::mem_fun(this, &Root::key_release_event));
 }
 
+void Root::tick()
+{
+       if(tooltip_timeout && Time::now()>tooltip_timeout)
+       {
+               if(Widget *wdg=get_descendant_at(pointer_x, pointer_y))
+               {
+                       const std::string &tip=wdg->get_tooltip();
+                       if(!tip.empty())
+                       {
+                               if(!lbl_tooltip)
+                               {
+                                       lbl_tooltip=new Label(res);
+                                       add(*lbl_tooltip);
+                                       lbl_tooltip->set_style("tooltip");
+                               }
+
+                               lbl_tooltip->set_text(tip);
+                               lbl_tooltip->autosize();
+                               const Geometry &tip_geom=lbl_tooltip->get_geometry();
+                               unsigned x=pointer_x+10;
+                               unsigned y=pointer_y-10-lbl_tooltip->get_geometry().h;
+                               if(x+tip_geom.w>geom.w)
+                               {
+                                       if(pointer_x>static_cast<int>(tip_geom.w+2))
+                                               x=pointer_x-2-tip_geom.w;
+                                       else
+                                               x=geom.w-tip_geom.w;
+                               }
+                               lbl_tooltip->set_position(x, y);
+                               raise(*lbl_tooltip);
+                               lbl_tooltip->set_visible(true);
+                               tooltip_timeout=Time::TimeStamp();
+                               tooltip_target=wdg;
+                       }
+               }
+       }
+}
+
 void Root::button_press_event(int x, int y, unsigned btn, unsigned)
 {
        if(visible)
@@ -51,6 +95,23 @@ void Root::pointer_motion_event(int x, int y)
        {
                translate_coords(x, y);
                pointer_motion(x, y);
+
+               if(!tooltip_target)
+               {
+                       if(pointer_focus)
+                       {
+                               pointer_x=x;
+                               pointer_y=y;
+                               tooltip_timeout=Time::now()+700*Time::msec;
+                       }
+                       else
+                               tooltip_timeout=Time::TimeStamp();
+               }
+               else if(get_descendant_at(x, y)!=tooltip_target)
+               {
+                       lbl_tooltip->set_visible(false);
+                       tooltip_target=0;
+               }
        }
 }