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Scale text overlay based on Android display DPI

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This commit is contained in:
saschawillems 2017-03-10 17:52:53 +01:00
parent 82521aaafb
commit 8b6cdf4e95
3 changed files with 33 additions and 0 deletions
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21
base/VulkanTextOverlay.hpp
View file

@ -22,6 +22,10 @@
#include "VulkanBuffer.hpp" #include "VulkanBuffer.hpp"
#include "VulkanDevice.hpp" #include "VulkanDevice.hpp"
#if defined(__ANDROID__)
#include "vulkanandroid.h"
#endif
#include "../external/stb/stb_font_consolas_24_latin1.inl" #include "../external/stb/stb_font_consolas_24_latin1.inl"
// Defines for the STB font used // Defines for the STB font used
@ -116,6 +120,23 @@ public:
this->frameBufferWidth = framebufferwidth; this->frameBufferWidth = framebufferwidth;
this->frameBufferHeight = framebufferheight; this->frameBufferHeight = framebufferheight;
#if defined(__ANDROID__)
// Scale text on Android devices with high DPI
int32_t screenDensity = vks::android::getScreenDensity();
if (screenDensity >= ACONFIGURATION_DENSITY_XXHIGH) {
LOGD("XXHIGH");
scale = 2.0f;
}
else if (screenDensity >= ACONFIGURATION_DENSITY_XHIGH) {
LOGD("XHIGH");
scale = 1.5f;
}
else if (screenDensity >= ACONFIGURATION_DENSITY_HIGH) {
LOGD("HIGH");
scale = 1.25f;
};
#endif
cmdBuffers.resize(framebuffers.size()); cmdBuffers.resize(framebuffers.size());
prepareResources(); prepareResources();
prepareRenderPass(); prepareRenderPass();

9
base/vulkanandroid.cpp
View file

@ -281,6 +281,15 @@ namespace vks
{ {
dlclose(libVulkan); dlclose(libVulkan);
} }
int32_t getScreenDensity()
{
AConfiguration* config = AConfiguration_new();
AConfiguration_fromAssetManager(config, androidApp->activity->assetManager);
int32_t density = AConfiguration_getDensity(config);
AConfiguration_delete(config);
return density;
}
} }
} }

3
base/vulkanandroid.h
View file

@ -24,6 +24,7 @@
#include <android/log.h> #include <android/log.h>
#include <android_native_app_glue.h> #include <android_native_app_glue.h>
#include <android/configuration.h>
#include <memory> #include <memory>
// Missing from the NDK // Missing from the NDK
@ -158,6 +159,8 @@ namespace vks
bool loadVulkanLibrary(); bool loadVulkanLibrary();
void loadVulkanFunctions(VkInstance instance); void loadVulkanFunctions(VkInstance instance);
void freeVulkanLibrary(); void freeVulkanLibrary();
/** @brief Returns the density of the device screen (in DPI) */
int32_t getScreenDensity();
} }
} }