tooltip-example.cpp
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/*
* Copyright (c) 2020 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <dali-toolkit/dali-toolkit.h>
#include <dali-toolkit/devel-api/controls/control-devel.h>
#include <dali-toolkit/devel-api/controls/tooltip/tooltip-properties.h>
using namespace Dali;
using namespace Dali::Toolkit;
namespace
{
const Vector4 WINDOW_COLOR(211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f); ///< The color of the window
const char* const THEME_PATH(DEMO_STYLE_DIR "tooltip-example-theme.json"); ///< The theme used for this example
const float POSITION_INCREMENTER(0.2f); ///< The position difference between the controls along the Y-Axis.
} // unnamed namespace
/**
* @brief Creates a controller which demonstrates the tooltip functionality in control.
*
* The Control base class supports tooltip functionality. However, the Toolkit Tooltip style is only set on Buttons by default.
* This example portrays the different ways in which a tooltip can be displayed and customised.
*/
class TooltipController : public ConnectionTracker
{
public:
TooltipController(Application& application)
: mApplication(application),
previousPosition(0.0f)
{
// Connect to the Application's Init signal
mApplication.InitSignal().Connect(this, &TooltipController::Create);
}
private:
// The Init signal is received once (only) during the Application lifetime
void Create(Application& application)
{
// Set the window background color and connect to the window's key signal to allow Back and Escape to exit.
Window window = application.GetWindow();
window.SetBackgroundColor(WINDOW_COLOR);
window.KeyEventSignal().Connect(this, &TooltipController::OnKeyEvent);
const Vector2 windowSize = window.GetSize();
// Add a text label at the top for information purposes
Control label = TextLabel::New("Hover over buttons to see tooltip");
label.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_CENTER);
label.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_CENTER);
label.SetProperty(TextLabel::Property::HORIZONTAL_ALIGNMENT, "Center");
window.Add(label);
// Simple tooltip from stylesheet
Control simple = PushButton::New();
simple.SetStyleName("TooltipTextOnly");
SetLabel(simple, "Simple");
Layout(simple, windowSize);
window.Add(simple);
// Tooltip with icon and text, from stylesheet
Control iconWithText = PushButton::New();
iconWithText.SetStyleName("TooltipArray");
SetLabel(iconWithText, "Icon with Text");
Layout(iconWithText, windowSize);
window.Add(iconWithText);
// Tooltip with custom style, from stylesheet
Control customFromStylesheet = PushButton::New();
customFromStylesheet.SetStyleName("TooltipCustom");
SetLabel(customFromStylesheet, "Custom From Stylesheet");
Layout(customFromStylesheet, windowSize);
window.Add(customFromStylesheet);
// Tooltip with custom style, from code
Control customFromCode = PushButton::New();
SetLabel(customFromCode, "Custom From Code");
Layout(customFromCode, windowSize);
customFromCode.SetProperty(DevelControl::Property::TOOLTIP,
{{Tooltip::Property::CONTENT,
Property::Array{{{{Toolkit::Visual::Property::TYPE, Visual::IMAGE},
{ImageVisual::Property::URL, DEMO_IMAGE_DIR "Logo-for-demo.png"}}},
{{{Toolkit::Visual::Property::TYPE, Visual::TEXT},
{TextVisual::Property::TEXT_COLOR, Color::WHITE},
{TextVisual::Property::TEXT, "Custom coded style\nat hover point"},
{TextVisual::Property::MULTI_LINE, true},
{TextVisual::Property::HORIZONTAL_ALIGNMENT, "CENTER"},
{TextVisual::Property::POINT_SIZE, 16}}}}},
{Tooltip::Property::LAYOUT, Vector2(2, 1)},
{Tooltip::Property::POSITION, Tooltip::Position::HOVER_POINT},
{Tooltip::Property::BACKGROUND,
{{Tooltip::Background::Property::VISUAL, DEMO_IMAGE_DIR "tooltip.9.png"},
{Tooltip::Background::Property::BORDER, Rect<int>(1, 5, 5, 1)}}}});
window.Add(customFromCode);
}
/**
* @brief Called when any key event is received
*
* Will use this to quit the application if Back or the Escape key is received
* @param[in] event The key event information
*/
void OnKeyEvent(const KeyEvent& event)
{
if(event.GetState() == KeyEvent::DOWN)
{
if(IsKey(event, Dali::DALI_KEY_ESCAPE) || IsKey(event, Dali::DALI_KEY_BACK))
{
mApplication.Quit();
}
}
}
/**
* @brief Sets the label on the control.
* @param[in] label The label to set.
*/
void SetLabel(Control control, std::string label)
{
if(control)
{
control.SetProperty(Button::Property::LABEL,
Property::Map().Add(Toolkit::Visual::Property::TYPE, Visual::TEXT).Add(TextVisual::Property::TEXT, label));
}
}
/**
* @brief Lays out the control in the appropriate location.
* @param[in] control The control to layout.
* @param[in] windowSize The size of the window, passing it in so we don't have to retrieve it every time.
*/
void Layout(Control control, const Vector2& windowSize)
{
if(control)
{
previousPosition += POSITION_INCREMENTER;
control.SetResizePolicy(ResizePolicy::SIZE_RELATIVE_TO_PARENT, Dimension::ALL_DIMENSIONS);
control.SetProperty(Actor::Property::SIZE_MODE_FACTOR, Vector3(0.75, 0.1, 1.0));
control.SetProperty(Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER);
control.SetProperty(Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_CENTER);
control.SetProperty(Actor::Property::POSITION_Y, windowSize.height * previousPosition);
}
}
private:
Application& mApplication;
float previousPosition;
};
int DALI_EXPORT_API main(int argc, char** argv)
{
Application application = Application::New(&argc, &argv, THEME_PATH);
TooltipController test(application);
application.MainLoop();
return 0;
}