In Widget Tab key press not gets in KeyDown

[Dreikblack]

If i press Tab it will be registered in KeyUp, but not in KeyDown

#include "UltraEngine.h"

using namespace UltraEngine;

class CustomWidget : public Panel {

    CustomWidget::CustomWidget() {
        cornerradius = 8;
    }

protected:

    virtual bool Initialize(const int x, const int y, const int width, const int height, shared_ptr<Widget> parent) {
        return Widget::Initialize(text, x, y, width, height, parent, style);
    }


    void KeyUp(const KeyCode key) override {
        if (key == KEY_TAB)
            Print("TAB UP");
    }
    bool KeyDown(const KeyCode key) override {
        if (key == KEY_TAB)
            Print("TAB DOWN");
        return true;
    }

public:


    static shared_ptr<CustomWidget> create(const int x, const int y, const int width, const int height, shared_ptr<Widget> parent) {
        struct Struct : public CustomWidget {
        };
        auto instance = std::make_shared<Struct>();
        instance->Initialize(x, y, width, height, parent);
        return instance;
    }

};

shared_ptr<Window> window;
shared_ptr<Framebuffer> framebuffer;
shared_ptr<World> menuWold;
shared_ptr<Interface> ui;
shared_ptr<Camera> uiCamera;

shared_ptr<CustomWidget> customWidget;

void initGui() {
    auto default_font = LoadFont("Fonts\\arial.ttf");
    ui = CreateInterface(menuWold, default_font, framebuffer->GetSize());
    ui->SetRenderLayers(2);
    ui->root->SetColor(1.0f, 1.0f, 1.0f, 1.0f);
    uiCamera = CreateCamera(menuWold, PROJECTION_ORTHOGRAPHIC);
    uiCamera->SetPosition((float)framebuffer->GetSize().x * 0.5f, (float)framebuffer->GetSize().y * 0.5f, 0);
    uiCamera->SetRenderLayers(2);
    uiCamera->SetClearMode(CLEAR_DEPTH);
    customWidget = CustomWidget::create(10, 10, 500, 120, ui->root);
}


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

    //Create a window
    window = CreateWindow("Ultra Engine", 0, 0, 500, 300, displays[0], WINDOW_DEFAULT);

    //Create a world
    menuWold = CreateWorld();

    //Create a framebuffer
    framebuffer = CreateFramebuffer(window);

    initGui();

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false) {
        const auto event = WaitEvent();
        ui->ProcessEvent(event);
        menuWold->Update();
        menuWold->Render(framebuffer);
    }
    return 0;
}

 

[Josh]

The reason for this is that tab switches the focus to the next widget, but for an editable text area, I can understand why that would not be desired.

[Dreikblack]

I hope it will be available for custom widgets as well

[Josh]

I am adding a protected method to handle this:

bool Widget::KeyFilter(const KeyCode key)
{
	switch (key)
	{
	case KEY_ESCAPE:
	case KEY_ENTER:
	case KEY_TAB:
		return false;
		break;
	}
	return true;
}

You can override this to return true if KEY_TAB or KEY_ENTER are encountered.

[Dreikblack]

Sorry, checked only now. Does not work for me:

#include "Leadwerks.h"

using namespace UltraEngine;

class CustomWidget : public Panel {

    CustomWidget::CustomWidget() {
        cornerradius = 8;
    }

protected:

    virtual bool Initialize(const int x, const int y, const int width, const int height, shared_ptr<Widget> parent) {
        return Widget::Initialize(text, x, y, width, height, parent, style);
    }

    void KeyUp(const KeyCode key) override {
        if (key == KEY_TAB)
            Print("TAB UP");
    }
    bool KeyDown(const KeyCode key) override {
        if (key == KEY_TAB)
            Print("TAB DOWN");
        return true;
    }
    bool KeyFilter(const KeyCode key) override {
        switch (key) {
        case KEY_ESCAPE:
        case KEY_ENTER:
        case KEY_TAB:
            return true;
            break;
        }
        return true;
    }

public:

    static shared_ptr<CustomWidget> create(const int x, const int y, const int width, const int height, shared_ptr<Widget> parent) {
        struct Struct : public CustomWidget {
        };
        auto instance = std::make_shared<Struct>();
        instance->Initialize(x, y, width, height, parent);
        return instance;
    }

};

shared_ptr<Window> window;
shared_ptr<Framebuffer> framebuffer;
shared_ptr<World> menuWold;
shared_ptr<Interface> ui;
shared_ptr<Camera> uiCamera;

shared_ptr<CustomWidget> customWidget;

void initGui() {
    auto default_font = LoadFont("Fonts\\arial.ttf");
    uiCamera = CreateCamera(menuWold, PROJECTION_ORTHOGRAPHIC);
    uiCamera->SetPosition((float)framebuffer->GetSize().x * 0.5f, (float)framebuffer->GetSize().y * 0.5f, 0);
    uiCamera->SetRenderLayers(2);
    uiCamera->SetClearMode(CLEAR_DEPTH);
    ui = CreateInterface(uiCamera, default_font, framebuffer->GetSize());
    ui->SetRenderLayers(2);
    ui->root->SetColor(1.0f, 1.0f, 1.0f, 1.0f);
    customWidget = CustomWidget::create(10, 10, 500, 120, ui->root);
}


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

    //Create a window
    window = CreateWindow("Ultra Engine", 0, 0, 500, 300, displays[0], WINDOW_DEFAULT);

    //Create a world
    menuWold = CreateWorld();

    //Create a framebuffer
    framebuffer = CreateFramebuffer(window);

    initGui();

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false) {
        const auto event = WaitEvent();
        ui->ProcessEvent(event);
        menuWold->Update();
        menuWold->Render(framebuffer);
    }
    return 0;
}

 

[Dreikblack]

Ah, wait. KeyFilter should return false to make it work.

[Josh]

KeyFilter mus be declared as a virtual method. All your overriding method must be.

[Dreikblack]

afaik override works same as virtual except it prevents mistakes if base method interface was changed or overriding method have wrong one.

Anyway it was about KeyFilter return value which should false to pass key to KeyDown.