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Support panning with the mouse wheel. #95

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Support panning with the mouse wheel. #95

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4 changes: 3 additions & 1 deletion src/gpuvis.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1383,7 +1383,9 @@ void MainApp::render()
{
{ "Ctrl+click drag", "Graph: Select area" },
{ "Shift+click drag", "Graph: Zoom selected area" },
{ "Mousewheel", "Graph: Zoom in / out" },
{ "Mousewheel", "Graph: Pan up / down" },
{ "Shift+mousewheel", "Graph: Pan left / right" },
{ "Ctrl+mousewheel", "Graph: Zoom in / out" },
{ "Alt down", "Graph: Hide labels" },
};
int graph_entry_count = 0;
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21 changes: 19 additions & 2 deletions src/gpuvis_graph.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4714,9 +4714,26 @@ void TraceWin::graph_handle_mouse_over( graph_info_t &gi )
}
else if ( io.MouseWheel )
{
bool zoomin = ( io.MouseWheel > 0.0f );
// wheel: move vertically
// shift + wheel: move horizontally
// alt + wheel: zoom
uint32_t mask = ( io.KeyCtrl << 0 ) | ( io.KeyAlt << 1 ) | ( io.KeyShift << 2 );

if ( mask == ( 1 << 0 ) )
{
bool zoomin = ( io.MouseWheel > 0.0f );

graph_zoom( mouse_ts, gi.ts0, zoomin );
graph_zoom( mouse_ts, gi.ts0, zoomin );
}
else if ( mask == ( 1 << 2 ))
{
m_graph.start_ts += (int64_t)(io.MouseWheel * m_graph.length_ts / 10);
m_graph.recalc_timebufs = true;
}
else if ( mask == 0 )
{
m_graph.start_y += io.MouseWheel * ImGui::GetTextLineHeightWithSpacing() * 4;
}
}
}

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