From b19afea9427dde861c990236ab11e23edfeb267c Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@telenet.be>
Date: Sat, 18 Jul 2020 14:49:13 +0200
Subject: Completed ui library tooltip implementation.

---
 src/ui/ui.cc | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'src/ui/ui.cc')

diff --git a/src/ui/ui.cc b/src/ui/ui.cc
index 700099e..fc52bbf 100644
--- a/src/ui/ui.cc
+++ b/src/ui/ui.cc
@@ -11,6 +11,7 @@
 #include "auxiliary/functions.h"
 #include "core/core.h"
 #include "core/application.h"
+#include "core/cvar.h"
 #include "filesystem/filesystem.h"
 #include "render/gl.h"
 #include "sys/sys.h"
@@ -34,6 +35,8 @@ float UI::margin = 16.0f;
 
 float UI::pointer_size = 48.0f;
 
+core::Cvar *ui_tooltiptimeout = nullptr;
+
 UI *global_ui = 0;
 
 UI *root()
@@ -44,6 +47,9 @@ UI *root()
 void init()
 {
 	con_print << "^BInitializing user interface..." << std::endl;
+	
+	ui_tooltiptimeout = core::Cvar::get("ui_tooltiptimeout", "250", core::Cvar::Archive);
+	ui_tooltiptimeout->set_info("[int] time in milliseconds before a tooltip is shown");
 
 	if (!global_ui) {
 		global_ui = new UI();
@@ -94,6 +100,7 @@ UI::UI() : Window(0)
 	mouse_pointer_bitmap.assign("pointer");
 	
 	mouse_buttonleft_pressed = false;
+	ui_tooltip_timestamp = core::application()->timestamp();
 }
 
 UI::~UI()
@@ -275,6 +282,17 @@ void UI::frame()
 	}
 	ui_mouse_focus = f;
 	
+	// show tooltip if the timeout has expired
+	if (ui_mouse_focus && ui_mouse_focus->tooltip() && ui_mouse_focus->tooltip()->hidden()) 
+	{
+		assert(ui_tooltiptimeout != nullptr);
+		unsigned long timeout = (unsigned long) ui_tooltiptimeout->value();
+	
+		if (ui_tooltip_timestamp + timeout < core::application()->timestamp()) {
+			ui_mouse_focus->tooltip()->show();
+		}
+	}
+	
 	// reset mouse pointer
 	ui::root()->set_pointer("pointer");
 	
@@ -293,6 +311,13 @@ void UI::frame()
 */
 void UI::input_mouse(const float x, const float y)
 {
+	// hide tooltip if the mouse has been moved
+	if (Tooltip::global() && Tooltip::global()->visible())
+	{
+		Tooltip::global()->hide();
+	}
+	ui_tooltip_timestamp = core::application()->timestamp();
+	
 	mouse_cursor.assign(x, y);
 }
 
@@ -300,6 +325,13 @@ bool UI::input_mouse_button(const bool pressed, unsigned int button)
 {
 	bool handled = false;
 	
+	// hide tooltip if a mouse button has been clicked
+	if (Tooltip::global() && Tooltip::global()->visible())
+	{
+		Tooltip::global()->hide();
+	}
+	ui_tooltip_timestamp = core::application()->timestamp();
+	
 	if (button == SDL_BUTTON_LEFT)
 	{
 		mouse_buttonleft_pressed = pressed;
-- 
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