- fix serious problems in widget code. fixup buffered mode. add animation support.lib/gui

1 files changed, 46 insertions, 0 deletions

diff --git a/lib/gui/ewidgetanimation.cpp b/lib/gui/ewidgetanimation.cpp
new file mode 100644
index 00000000..3912d592
--- /dev/null
+++ b/lib/gui/ewidgetanimation.cpp
@@ -0,0 +1,46 @@
+#include <lib/gui/ewidgetanimation.h>
+#include <lib/gui/ewidget.h>
+
+eWidgetAnimation::eWidgetAnimation(eWidget *widget): m_widget(widget)
+{
+	m_active = 0;
+}
+
+void eWidgetAnimation::tick(int inc)
+{
+	if (!m_active)
+		return;
+	
+		// move animation
+	if (m_move_length)
+	{
+		if (m_move_current_tick >= m_move_length)
+		{
+			m_active = 0;
+			m_move_current_tick = m_move_length;
+		}
+		int xdiff = m_move_end.x() - m_move_start.x();
+		int ydiff = m_move_end.y() - m_move_start.y();
+		
+		xdiff *= m_move_current_tick;
+		xdiff /= m_move_length;
+
+		ydiff *= m_move_current_tick;
+		ydiff /= m_move_length;
+		
+		ePoint res(m_move_start.x() + xdiff, m_move_start.y() + ydiff);
+		
+		m_move_current_tick += inc;
+		
+		m_widget->move(res);
+	}
+}
+
+void eWidgetAnimation::startMoveAnimation(ePoint start, ePoint end, int length)
+{
+	m_move_current_tick = 0;
+	m_move_length = length;
+	m_move_start = start;
+	m_move_end = end;
+	m_active = 1;
+}