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For properly refreshing and resizing multiple layers of windows
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| #include "ui_manager.h" | ||
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| #include <vector> | ||
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| #include "cursesdef.h" | ||
| #include "point.h" | ||
| #include "sdltiles.h" | ||
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| static std::vector<std::reference_wrapper<ui_adaptor>> ui_stack; | ||
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| ui_adaptor::ui_adaptor() : invalidated( false ) | ||
| { | ||
| ui_stack.emplace_back( *this ); | ||
| } | ||
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| ui_adaptor::~ui_adaptor() | ||
| { | ||
| for( auto it = ui_stack.rbegin(); it < ui_stack.rend(); ++it ) { | ||
| if( &it->get() == this ) { | ||
| ui_stack.erase( std::prev( it.base() ) ); | ||
| // TODO avoid invalidating portions that do not need to be redrawn | ||
| ui_manager::invalidate( dimensions ); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
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| void ui_adaptor::position_from_window( const catacurses::window &win ) | ||
| { | ||
| const rectangle old_dimensions = dimensions; | ||
| // ensure position is updated before calling invalidate | ||
| #ifdef TILES | ||
| const window_dimensions dim = get_window_dimensions( win ); | ||
| dimensions = rectangle( dim.window_pos_pixel, dim.window_pos_pixel + dim.window_size_pixel ); | ||
| #else | ||
| const point origin( getbegx( win ), getbegy( win ) ); | ||
| dimensions = rectangle( origin, origin + point( getmaxx( win ), getmaxy( win ) ) ); | ||
| #endif | ||
| invalidated = true; | ||
| ui_manager::invalidate( old_dimensions ); | ||
| } | ||
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| void ui_adaptor::on_redraw( const redraw_callback_t &fun ) | ||
| { | ||
| redraw_cb = fun; | ||
| } | ||
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| void ui_adaptor::on_screen_resize( const screen_resize_callback_t &fun ) | ||
| { | ||
| screen_resized_cb = fun; | ||
| } | ||
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| static bool contains( const rectangle &lhs, const rectangle &rhs ) | ||
| { | ||
| return rhs.p_min.x >= lhs.p_min.x && rhs.p_max.x <= lhs.p_max.x && | ||
| rhs.p_min.y >= lhs.p_min.y && rhs.p_max.y <= lhs.p_max.y; | ||
| } | ||
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| static bool overlap( const rectangle &lhs, const rectangle &rhs ) | ||
| { | ||
| return lhs.p_min.x < rhs.p_max.x && lhs.p_min.y < rhs.p_max.y && | ||
| rhs.p_min.x < lhs.p_max.x && rhs.p_min.y < lhs.p_max.y; | ||
| } | ||
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| void ui_adaptor::invalidate( const rectangle &rect ) | ||
| { | ||
| if( rect.p_min.x >= rect.p_max.x || rect.p_min.y >= rect.p_max.y ) { | ||
| return; | ||
| } | ||
| // TODO avoid invalidating portions that do not need to be redrawn | ||
| for( auto it = ui_stack.crbegin(); it < ui_stack.crend(); ++it ) { | ||
| const ui_adaptor &ui = it->get(); | ||
| if( overlap( ui.dimensions, rect ) ) { | ||
| ui.invalidated = true; | ||
| if( contains( ui.dimensions, rect ) ) { | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| void ui_adaptor::redraw() | ||
| { | ||
| // TODO refresh only when all stacked UIs are drawn | ||
| if( !ui_stack.empty() ) { | ||
| ui_stack.back().get().invalidated = true; | ||
| for( const ui_adaptor &ui : ui_stack ) { | ||
| if( ui.invalidated ) { | ||
| if( ui.redraw_cb ) { | ||
| ui.redraw_cb( ui ); | ||
| } | ||
| ui.invalidated = false; | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| void ui_adaptor::screen_resized() | ||
| { | ||
| for( ui_adaptor &ui : ui_stack ) { | ||
| if( ui.screen_resized_cb ) { | ||
| ui.screen_resized_cb( ui ); | ||
| } | ||
| } | ||
| redraw(); | ||
| } | ||
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| namespace ui_manager | ||
| { | ||
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| void invalidate( const rectangle &rect ) | ||
| { | ||
| ui_adaptor::invalidate( rect ); | ||
| } | ||
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| void redraw() | ||
| { | ||
| ui_adaptor::redraw(); | ||
| } | ||
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| void screen_resized() | ||
| { | ||
| ui_adaptor::screen_resized(); | ||
| } | ||
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| } // namespace ui_manager |
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