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Android UI overlay touch handling

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This commit is contained in:
saschawillems 2017-11-02 17:07:07 +01:00
parent 97975a314d
commit 5795a77e7b
3 changed files with 45 additions and 15 deletions
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2
base/VulkanAndroid.h
View file

@ -158,7 +158,9 @@ namespace vks
{
/* @brief Touch control thresholds from Android NDK samples */
const int32_t DOUBLE_TAP_TIMEOUT = 300 * 1000000;
const int32_t TAP_TIMEOUT = 180 * 1000000;
const int32_t DOUBLE_TAP_SLOP = 100;
const int32_t TAP_SLOP = 8;
/** @brief Density of the device screen (in DPI) */
extern int32_t screenDensity;

6
base/VulkanUIOverlay.cpp
View file

@ -29,13 +29,13 @@ namespace vks
#if defined(__ANDROID__)
if (vks::android::screenDensity >= ACONFIGURATION_DENSITY_XXHIGH) {
scale = 3.0f;
scale = 3.5f;
}
else if (vks::android::screenDensity >= ACONFIGURATION_DENSITY_XHIGH) {
scale = 2.25f;
scale = 2.5f;
}
else if (vks::android::screenDensity >= ACONFIGURATION_DENSITY_HIGH) {
scale = 1.875f;
scale = 2.0f;
};
#endif

52
base/vulkanexamplebase.cpp
View file

@ -576,6 +576,12 @@ void VulkanExampleBase::updateOverlay()
ImGui::Render();
UIOverlay->update();
#if defined(VK_USE_PLATFORM_ANDROID_KHR)
if (mouseButtons.left) {
mouseButtons.left = false;
}
#endif
}
void VulkanExampleBase::prepareFrame()
@ -1211,6 +1217,19 @@ int32_t VulkanExampleBase::handleAppInput(struct android_app* app, AInputEvent*
vulkanExample->touchTimer = 0.0;
vulkanExample->touchDown = false;
vulkanExample->camera.keys.up = false;
// Detect single tap
int64_t eventTime = AMotionEvent_getEventTime(event);
int64_t downTime = AMotionEvent_getDownTime(event);
if (eventTime - downTime <= vks::android::TAP_TIMEOUT) {
float deadZone = (160.f / vks::android::screenDensity) * vks::android::TAP_SLOP * vks::android::TAP_SLOP;
float x = AMotionEvent_getX(event, 0) - vulkanExample->touchPos.x;
float y = AMotionEvent_getY(event, 0) - vulkanExample->touchPos.y;
if ((x * x + y * y) < deadZone) {
vulkanExample->mouseButtons.left = true;
}
};
return 1;
break;
}
@ -1231,25 +1250,34 @@ int32_t VulkanExampleBase::handleAppInput(struct android_app* app, AInputEvent*
}
vulkanExample->touchPos.x = AMotionEvent_getX(event, 0);
vulkanExample->touchPos.y = AMotionEvent_getY(event, 0);
vulkanExample->mousePos.x = AMotionEvent_getX(event, 0);
vulkanExample->mousePos.y = AMotionEvent_getY(event, 0);
break;
}
}
case AMOTION_EVENT_ACTION_MOVE: {
int32_t eventX = AMotionEvent_getX(event, 0);
int32_t eventY = AMotionEvent_getY(event, 0);
bool handled = false;
if (vulkanExample->settings.overlay) {
ImGuiIO& io = ImGui::GetIO();
handled = io.WantCaptureMouse;
}
if (!handled) {
int32_t eventX = AMotionEvent_getX(event, 0);
int32_t eventY = AMotionEvent_getY(event, 0);
float deltaX = (float)(vulkanExample->touchPos.y - eventY) * vulkanExample->rotationSpeed * 0.5f;
float deltaY = (float)(vulkanExample->touchPos.x - eventX) * vulkanExample->rotationSpeed * 0.5f;
float deltaX = (float)(vulkanExample->touchPos.y - eventY) * vulkanExample->rotationSpeed * 0.5f;
float deltaY = (float)(vulkanExample->touchPos.x - eventX) * vulkanExample->rotationSpeed * 0.5f;
vulkanExample->camera.rotate(glm::vec3(deltaX, 0.0f, 0.0f));
vulkanExample->camera.rotate(glm::vec3(0.0f, -deltaY, 0.0f));
vulkanExample->camera.rotate(glm::vec3(deltaX, 0.0f, 0.0f));
vulkanExample->camera.rotate(glm::vec3(0.0f, -deltaY, 0.0f));
vulkanExample->rotation.x += deltaX;
vulkanExample->rotation.y -= deltaY;
vulkanExample->rotation.x += deltaX;
vulkanExample->rotation.y -= deltaY;
vulkanExample->viewChanged();
vulkanExample->viewChanged();
vulkanExample->touchPos.x = eventX;
vulkanExample->touchPos.y = eventY;
vulkanExample->touchPos.x = eventX;
vulkanExample->touchPos.y = eventY;
}
break;
}
default: