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@ -17,10 +17,12 @@
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#include "settings_type.h"
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#include "network/network.h"
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#include "network/network_func.h"
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#include "window_gui.h"
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#include "window_func.h"
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#include "newgrf_debug.h"
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#include "thread.h"
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#include "core/backup_type.hpp"
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#include "viewport_func.h"
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#include "table/palettes.h"
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#include "table/string_colours.h"
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@ -2042,6 +2044,38 @@ void UpdateGUIZoom()
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}
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}
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/**
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* Resolve GUI zoom level and adjust GUI to new zoom, if auto-suggestion is requested.
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* @returns true when the zoom level has changed, caller must call ReInitAllWindows(true)
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* after resizing the application's window/buffer.
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*/
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bool AdjustGUIZoom()
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{
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auto old_zoom = _gui_zoom;
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UpdateGUIZoom();
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if (old_zoom == _gui_zoom) return false;
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GfxClearSpriteCache();
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VideoDriver::GetInstance()->ClearSystemSprites();
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ClearFontCache();
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GfxClearSpriteCache();
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UpdateAllVirtCoords();
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/* Adjust all window sizes to match the new zoom level, so that they don't appear
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to move around when the application is moved to a screen with different DPI. */
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auto zoom_shift = old_zoom - _gui_zoom;
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for (Window *w : Window::Iterate()) {
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w->left = AdjustByZoom(w->left, zoom_shift);
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w->top = AdjustByZoom(w->top, zoom_shift);
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w->width = AdjustByZoom(w->width, zoom_shift);
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w->height = AdjustByZoom(w->height, zoom_shift);
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if (w->viewport != nullptr) {
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w->viewport->zoom = Clamp(ZoomLevel(w->viewport->zoom - zoom_shift), _settings_client.gui.zoom_min, _settings_client.gui.zoom_max);
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}
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}
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return true;
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}
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void ChangeGameSpeed(bool enable_fast_forward)
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{
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if (enable_fast_forward) {
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