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format dpi_aware

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This commit is contained in:
yuyoyuppe
2019-12-17 12:32:56 +03:00
committed by yuyoyuppe
parent 2e922019d7
commit 0fd0a8b7cc
2 changed files with 80 additions and 69 deletions
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115
src/common/dpi_aware.cpp
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@@ -5,60 +5,71 @@
namespace DPIAware namespace DPIAware
{ {
HRESULT GetScreenDPIForWindow(HWND hwnd, UINT &dpi_x, UINT &dpi_y) { HRESULT GetScreenDPIForWindow(HWND hwnd, UINT& dpi_x, UINT& dpi_y)
auto monitor_handle = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
dpi_x = 0;
dpi_y = 0;
if (monitor_handle != nullptr) {
return GetDpiForMonitor(monitor_handle, MDT_EFFECTIVE_DPI, &dpi_x, &dpi_y);
} else {
return E_FAIL;
}
}
HRESULT GetScreenDPIForPoint(POINT p, UINT& dpi_x, UINT& dpi_y) {
auto monitor_handle = MonitorFromPoint(p, MONITOR_DEFAULTTONEAREST);
dpi_x = 0;
dpi_y = 0;
if (monitor_handle != nullptr) {
return GetDpiForMonitor(monitor_handle, MDT_EFFECTIVE_DPI, &dpi_x, &dpi_y);
}
else {
return E_FAIL;
}
}
void Convert(HMONITOR monitor_handle, int &width, int &height) {
if (monitor_handle == NULL) {
const POINT ptZero = { 0, 0 };
monitor_handle = MonitorFromPoint(ptZero, MONITOR_DEFAULTTOPRIMARY);
}
UINT dpi_x, dpi_y;
if (GetDpiForMonitor(monitor_handle, MDT_EFFECTIVE_DPI, &dpi_x, &dpi_y) == S_OK) {
width = width * dpi_x / DEFAULT_DPI;
height = height * dpi_y / DEFAULT_DPI;
}
}
void EnableDPIAwarenessForThisProcess() {
SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
}
AWARENESS_LEVEL GetAwarenessLevel(DPI_AWARENESS_CONTEXT system_returned_value)
{
const std::array levels{ DPI_AWARENESS_CONTEXT_UNAWARE,
DPI_AWARENESS_CONTEXT_SYSTEM_AWARE,
DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE,
DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2,
DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED };
for(size_t i = 0; i < size(levels); ++i)
{ {
if(AreDpiAwarenessContextsEqual(levels[i], system_returned_value)) auto monitor_handle = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
dpi_x = 0;
dpi_y = 0;
if (monitor_handle != nullptr)
{ {
return static_cast<AWARENESS_LEVEL>(i); return GetDpiForMonitor(monitor_handle, MDT_EFFECTIVE_DPI, &dpi_x, &dpi_y);
}
else
{
return E_FAIL;
} }
} }
return AWARENESS_LEVEL::UNAWARE;
} HRESULT GetScreenDPIForPoint(POINT p, UINT& dpi_x, UINT& dpi_y)
{
auto monitor_handle = MonitorFromPoint(p, MONITOR_DEFAULTTONEAREST);
dpi_x = 0;
dpi_y = 0;
if (monitor_handle != nullptr)
{
return GetDpiForMonitor(monitor_handle, MDT_EFFECTIVE_DPI, &dpi_x, &dpi_y);
}
else
{
return E_FAIL;
}
}
void Convert(HMONITOR monitor_handle, int& width, int& height)
{
if (monitor_handle == NULL)
{
const POINT ptZero = { 0, 0 };
monitor_handle = MonitorFromPoint(ptZero, MONITOR_DEFAULTTOPRIMARY);
}
UINT dpi_x, dpi_y;
if (GetDpiForMonitor(monitor_handle, MDT_EFFECTIVE_DPI, &dpi_x, &dpi_y) == S_OK)
{
width = width * dpi_x / DEFAULT_DPI;
height = height * dpi_y / DEFAULT_DPI;
}
}
void EnableDPIAwarenessForThisProcess()
{
SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
}
AWARENESS_LEVEL GetAwarenessLevel(DPI_AWARENESS_CONTEXT system_returned_value)
{
const std::array levels{ DPI_AWARENESS_CONTEXT_UNAWARE,
DPI_AWARENESS_CONTEXT_SYSTEM_AWARE,
DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE,
DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2,
DPI_AWARENESS_CONTEXT_UNAWARE_GDISCALED };
for (size_t i = 0; i < size(levels); ++i)
{
if (AreDpiAwarenessContextsEqual(levels[i], system_returned_value))
{
return static_cast<AWARENESS_LEVEL>(i);
}
}
return AWARENESS_LEVEL::UNAWARE;
}
} }

34
src/common/dpi_aware.h
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@@ -1,22 +1,22 @@
#pragma once #pragma once
#include "windef.h" #include "windef.h"
namespace DPIAware { namespace DPIAware
constexpr inline int DEFAULT_DPI = 96; {
constexpr inline int DEFAULT_DPI = 96;
HRESULT GetScreenDPIForWindow(HWND hwnd, UINT & dpi_x, UINT & dpi_y); HRESULT GetScreenDPIForWindow(HWND hwnd, UINT& dpi_x, UINT& dpi_y);
HRESULT GetScreenDPIForPoint(POINT p, UINT& dpi_x, UINT& dpi_y); HRESULT GetScreenDPIForPoint(POINT p, UINT& dpi_x, UINT& dpi_y);
void Convert(HMONITOR monitor_handle, int &width, int &height); void Convert(HMONITOR monitor_handle, int& width, int& height);
void EnableDPIAwarenessForThisProcess(); void EnableDPIAwarenessForThisProcess();
enum class AWARENESS_LEVEL enum AWARENESS_LEVEL
{ {
UNAWARE, UNAWARE,
SYSTEM_AWARE, SYSTEM_AWARE,
PER_MONITOR_AWARE, PER_MONITOR_AWARE,
PER_MONITOR_AWARE_V2, PER_MONITOR_AWARE_V2,
UNAWARE_GDISCALED UNAWARE_GDISCALED
}; };
AWARENESS_LEVEL GetAwarenessLevel(DPI_AWARENESS_CONTEXT system_returned_value); AWARENESS_LEVEL GetAwarenessLevel(DPI_AWARENESS_CONTEXT system_returned_value);
}; };