Widget::SetFontScale

This method sets the font scale to make text relatively larger or smaller. The font scale will adjust with DPI scaling so it only needs to be set once.

Syntax

• void SetFontScale(const float scale)

Example

#include "UltraEngine.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    auto window = CreateWindow("Ultra Engine", 0, 0, 800, 600, displays[0]);

    //Create User Interface
    auto ui = CreateInterface(window);
    auto sz = ui->root->ClientSize();

    auto label = CreateLabel("Font scale:", 10, 10, sz.x - 20, 30, ui->root);

    auto slider = CreateSlider(10, 40, sz.x - 20, 30, ui->root, SLIDER_TRACKBAR);
    slider->SetRange(1, 40);
    slider->SetValue(4);
    EmitEvent(EVENT_WIDGETACTION, slider, 4);

    auto textarea = CreateTextArea(10, 75, sz.x - 20, sz.y - 85, ui->root, TEXTAREA_WORDWRAP);
    textarea->SetText("The quick brown fox jumps over the lazy dog.");

    while (true)
    {
        const Event ev = WaitEvent();
        switch (ev.id)
        {
        case EVENT_WIDGETACTION:
            if (ev.source == slider)
            {
                textarea->SetFontScale(float(ev.data) / 4.0);
            }
            break;
        case EVENT_WINDOWCLOSE:
            return 0;
            break;
        }
    }
    return 0;
}