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@ -24,13 +24,18 @@ static const int SLIDER_WIDTH = 3;
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* @param min_value Minimum value of slider
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* @param max_value Maximum value of slider
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* @param value Value to put the slider at
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* @param labels List of positions and labels to draw along the slider.
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*/
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void DrawSliderWidget(Rect r, int min_value, int max_value, int value)
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void DrawSliderWidget(Rect r, int min_value, int max_value, int value, const std::map<int, StringID> &labels)
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{
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/* Allow space for labels. We assume they are in the small font. */
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if (labels.size() > 0) r.bottom -= FONT_HEIGHT_SMALL + WidgetDimensions::scaled.hsep_normal;
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max_value -= min_value;
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/* Draw a wedge indicating low to high value. */
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const int ha = (r.bottom - r.top) / 5;
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const int sw = ScaleGUITrad(SLIDER_WIDTH);
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const int t = WidgetDimensions::scaled.bevel.top; /* Thickness of lines */
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int wx1 = r.left + sw / 2;
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int wx2 = r.right - sw / 2;
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@ -44,10 +49,22 @@ void DrawSliderWidget(Rect r, int min_value, int max_value, int value)
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GfxDrawLine(wedge[1].x, wedge[1].y, wedge[2].x, wedge[2].y, _current_text_dir == TD_RTL ? shadow : light, t);
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GfxDrawLine(wedge[0].x, wedge[0].y, wedge[1].x, wedge[1].y, shadow, t);
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int x;
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for (auto label : labels) {
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x = label.first - min_value;
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if (_current_text_dir == TD_RTL) x = max_value - x;
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x = r.left + (x * (r.right - r.left - sw) / max_value) + sw / 2;
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GfxDrawLine(x, r.bottom - ha + 1, x, r.bottom + (label.second == STR_NULL ? 0 : WidgetDimensions::scaled.hsep_normal), shadow, t);
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if (label.second != STR_NULL) {
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Dimension d = GetStringBoundingBox(label.second, FS_SMALL);
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x = Clamp(x - d.width / 2, r.left, r.right - d.width);
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DrawString(x, x + d.width, r.bottom + 1 + WidgetDimensions::scaled.hsep_normal, label.second, TC_BLACK, SA_CENTER, false, FS_SMALL);
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}
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}
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/* Draw a slider handle indicating current value. */
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const int sw = ScaleGUITrad(SLIDER_WIDTH);
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if (_current_text_dir == TD_RTL) value = max_value - value;
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const int x = r.left + ((value - min_value) * (r.right - r.left - sw) / max_value);
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x = r.left + ((value - min_value) * (r.right - r.left - sw) / max_value);
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DrawFrameRect(x, r.top, x + sw, r.bottom, COLOUR_GREY, FR_NONE);
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}
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