2017-11-20 17:01:09 +01:00
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#include "externals.hh"
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#include "syncview.hh"
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#include "globals.hh"
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2017-11-20 21:54:46 +01:00
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#include "window.hh"
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#define IMGUI_DEFINE_MATH_OPERATORS
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#include <imgui_internal.h>
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2017-11-20 17:01:09 +01:00
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using namespace ebcl;
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/*= T_SyncViewImpl_ ============================================================*/
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namespace {
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struct T_SyncViewImpl_
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{
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static constexpr float SeqHeaderHeight = 24;
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static constexpr float BarWidth = 40;
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const uint32_t ColFrame{ ImGui::GetColorU32( ImVec4{ 0 , 0 , 0 , .8 } ) };
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const uint32_t ColHeader{ ImGui::GetColorU32( ImVec4{ .5 , .5 , .5 , .8 } ) };
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const uint32_t ColHeaderText{ ImGui::GetColorU32( ImVec4{ 0 , 0 , 0 , 1 } ) };
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const uint32_t ColMain{ ImGui::GetColorU32( ImVec4{ .4 , .4 , .4 , .8 } ) };
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float zoomLevel{ 1.f };
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float startPos{ 100.895f };
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bool followTime{ true };
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bool display( ) noexcept;
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void sequencerWidget( ) noexcept;
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void sequencerHeader( ImRect const& bb ) noexcept;
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void sequencerBody( ImRect const& bb ) noexcept;
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};
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bool T_SyncViewImpl_::display( ) noexcept
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{
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using namespace ImGui;
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auto const& dspSize( GetIO( ).DisplaySize );
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auto& sync( Globals::Sync( ) );
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// Window set-up
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SetNextWindowSize( ImVec2( dspSize.x , 150 ) , ImGuiSetCond_Appearing );
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SetNextWindowPos( ImVec2( 0 , dspSize.y - 150 ) , ImGuiSetCond_Appearing );
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bool displayed{ true };
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Begin( "Sequencer" , &displayed , ImGuiWindowFlags_NoCollapse
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| ImGuiWindowFlags_NoScrollWithMouse );
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if ( !displayed ) {
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End( );
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return false;
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}
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2017-11-21 12:27:23 +01:00
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PushItemWidth( 100 );
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SliderFloat( "Zoom" , &zoomLevel , 0 , 1 , "%.2f" );
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PopItemWidth( );
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SameLine( );
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PushID( "playing" );
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if ( Button( sync.playing( ) ? "Stop" : "Play" ) ) {
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sync.playing( ) = !sync.playing( ) && !sync.finished( );
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}
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PopID( );
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const float d( sync.duration( ) );
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float tm( sync.time( ) );
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SameLine( );
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PushID( "sequencer" );
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PushItemWidth( -1 );
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if ( SliderFloat( "" , &tm , 0 , d , "%.1fs" ) ) {
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sync.setTime( tm );
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sync.playing( ) = sync.playing( ) && !sync.finished( );
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}
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PopItemWidth( );
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PopID( );
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PushItemWidth( -1 );
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sequencerWidget( );
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PopItemWidth( );
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End( );
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return true;
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}
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void T_SyncViewImpl_::sequencerWidget( ) noexcept
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{
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using namespace ImGui;
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const auto width{ CalcItemWidth( ) };
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auto* const win( GetCurrentWindow( ) );
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const auto seqId{ win->GetID( "##sequencer" ) };
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const ImVec2 cPos( win->DC.CursorPos );
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const ImVec2 ws( GetWindowContentRegionMax( ) );
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auto& style( ImGui::GetStyle( ) );
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const ImRect bbHeader{ cPos , cPos + ImVec2( width , SeqHeaderHeight ) };
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const ImRect bbDisplay{ ImVec2{ cPos.x , bbHeader.Max.y } ,
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ImVec2{ cPos.x + width , GetWindowPos( ).y + ws.y - style.FramePadding.y } };
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const ImRect bbAll{ bbHeader.Min , bbDisplay.Max };
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ItemSize( bbAll , style.FramePadding.y );
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if ( !ItemAdd( bbAll , seqId ) ) {
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return;
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}
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/*
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* Scaling:
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* At minimal zoom level, we want the whole "track" to fit inside the
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* available width.
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* At maximal zoom level, we want units from the sync manager to cover
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* $MIN_UNIT_WIDTH pixels (that should depend on the text size).
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* The displayed size of the units increases along with the zoom level.
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* Display units are rescaled when the distance between them
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* becomes >= 2 * $MIN_UNIT_WIDTH
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* At worst, the sequence is only one unit long; this means that no
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* scaling occurs between minimal and maximal levels.
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*/
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auto& sync( Globals::Sync( ) );
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const float innerWidth{ width - 2 };
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const uint32_t units{ sync.durationUnits( ) };
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zoomLevel = ImSaturate( zoomLevel );
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const float zoom1Pixels{ std::max( units * BarWidth , innerWidth ) };
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const float totalPixels{ zoomLevel * ( zoom1Pixels - innerWidth ) + innerWidth };
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const uint32_t totalBars{ [=](){
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const float b{ std::max( std::min( totalPixels / BarWidth , float( units ) ) , 1.f ) };
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const float mod{ fmod( b , 1.f ) };
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return uint32_t( b + ( mod ? ( 1 - mod ) : 0 ) );
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}() };
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const float unitsPerBar{ float( units ) / totalBars };
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const float barWidth{ totalPixels / totalBars };
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const float absCursorPos{ sync.time( ) * totalPixels / sync.duration( ) };
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if ( followTime ) {
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const float dispUnits{ innerWidth * units / totalPixels };
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const float uSize{ sync.durationUnitSize( ) };
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const float endPos{ std::min( startPos + dispUnits , float( units ) ) };
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startPos = endPos - dispUnits;
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const float spp{ startPos * totalPixels / units };
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const float epp{ endPos * totalPixels / units };
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if ( absCursorPos < spp || absCursorPos > epp ) {
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startPos = std::max( 0.f , sync.time( ) / uSize - unitsPerBar * .5f );
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}
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}
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const float unadjustedStartPixel{ totalPixels * startPos / units };
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if ( unadjustedStartPixel + innerWidth > totalPixels ) {
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startPos = std::max( 0.f , totalPixels - innerWidth );
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}
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const float startPixel{ totalPixels * startPos / units };
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const uint32_t startBar{ [=](){
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const float b{ startPixel * totalBars / totalPixels };
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const float mod{ fmod( b , 1.f ) };
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return uint32_t( std::max( 0 , int32_t( b - ( mod ? mod : 1 ) ) ) );
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}() };
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const float startBarPos{ startBar * barWidth - startPixel };
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const float cursorPos{ absCursorPos - startPixel };
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printf( "Z: %f; P@zl1: %f; Pt: %f; Bt: %d; U/B: %f; Bw: %f; Sp: %f; Sb: %d, SbP: %f\n" , zoomLevel , zoom1Pixels , totalPixels , totalBars , unitsPerBar , barWidth , startPixel , startBar , startBarPos );
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assert( startBarPos <= 0 );
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assert( totalPixels >= innerWidth );
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PushID( seqId );
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BeginGroup( );
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const auto hdrId{ win->GetID( "##header" ) };
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const auto dspId{ win->GetID( "##display" ) };
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if ( ItemAdd( bbHeader , hdrId ) ) {
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PushID( hdrId );
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sequencerHeader( bbHeader );
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PopID( );
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}
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if ( bbDisplay.Min.y < bbDisplay.Max.y && ItemAdd( bbDisplay , dspId ) ) {
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PushID( dspId );
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sequencerBody( bbDisplay );
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PopID( );
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}
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if ( cursorPos >= 0 && cursorPos <= width ) {
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auto* const dl( GetWindowDrawList( ) );
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dl->AddLine( bbAll.Min + ImVec2{ cursorPos + 1 , 0 } ,
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ImVec2{ bbAll.Min.x + cursorPos + 1 , bbAll.Max.y } ,
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0xffffffff );
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}
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EndGroup( );
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PopID( );
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}
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void T_SyncViewImpl_::sequencerHeader(
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ImRect const& bb ) noexcept
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{
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using namespace ImGui;
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auto* const dl( GetWindowDrawList( ) );
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PushFont( Globals::Window( ).smallFont( ) );
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PushStyleColor( ImGuiCol_Text , ColHeaderText );
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dl->AddRectFilled( bb.Min + ImVec2( 1 , 1 ) , bb.Max - ImVec2( 1 , 1 ) ,
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ColHeader );
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dl->AddRect( bb.Min , bb.Max , ColFrame );
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const ImRect textBb{ bb.Min - ImVec2{ 10 , 0 } , bb.Max + ImVec2{ 10 , 0 } };
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RenderTextClipped( textBb.Min , textBb.Max , "test!" , nullptr , nullptr , ImVec2{ 0 , .25 } , &bb );
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RenderTextClipped( textBb.Min , textBb.Max , "...icle" , nullptr , nullptr , ImVec2{ 0 , .75 } , &bb );
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PopStyleColor( );
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PopFont( );
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}
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void T_SyncViewImpl_::sequencerBody(
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ImRect const& bb ) noexcept
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{
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using namespace ImGui;
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auto* const dl( GetWindowDrawList( ) );
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dl->AddRectFilled( bb.Min , bb.Max , ColMain );
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}
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2017-11-20 17:01:09 +01:00
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} // namespace
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/*= T_SyncView =================================================================*/
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T_SyncView::T_SyncView( ) noexcept
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: A_PrivateImplementation( new T_SyncViewImpl_( ) )
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{ }
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bool T_SyncView::display( ) noexcept
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{
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return p< T_SyncViewImpl_ >( ).display( );
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}
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