From 63ae6bf8fbd1e9d6c00ecdfc3680dece465e0c6c Mon Sep 17 00:00:00 2001
From: StapleButter <thetotalworm@gmail.com>
Date: Fri, 21 Dec 2018 05:01:37 +0100
Subject: libui/windows: some work on hiDPI shit

still looks derpy but atleast the rendering and touchscreen aren't broken
---
 src/libui_sdl/libui/windows/areadraw.cpp   | 10 ++++++++++
 src/libui_sdl/libui/windows/areaevents.cpp |  2 +-
 src/libui_sdl/libui/windows/areautil.cpp   |  1 +
 src/libui_sdl/libui/windows/draw.cpp       |  7 +++++++
 src/libui_sdl/libui/windows/init.cpp       |  2 +-
 5 files changed, 20 insertions(+), 2 deletions(-)

(limited to 'src/libui_sdl')

diff --git a/src/libui_sdl/libui/windows/areadraw.cpp b/src/libui_sdl/libui/windows/areadraw.cpp
index 0bdf58a..a9ad477 100644
--- a/src/libui_sdl/libui/windows/areadraw.cpp
+++ b/src/libui_sdl/libui/windows/areadraw.cpp
@@ -26,6 +26,16 @@ static HRESULT doPaint(uiArea *a, ID2D1RenderTarget *rt, RECT *clip)
 
 	rt->BeginDraw();
 
+	{
+        float dpi_x, dpi_y;
+        D2D1_MATRIX_3X2_F dm;
+        rt->GetDpi(&dpi_x, &dpi_y);
+        ZeroMemory(&dm, sizeof (D2D1_MATRIX_3X2_F));
+        dm._11 = 96.f/dpi_x;
+        dm._22 = 96.f/dpi_y;
+        rt->SetTransform(&dm);
+	}
+
 	if (a->scrolling) {
 		ZeroMemory(&scrollTransform, sizeof (D2D1_MATRIX_3X2_F));
 		scrollTransform._11 = 1;
diff --git a/src/libui_sdl/libui/windows/areaevents.cpp b/src/libui_sdl/libui/windows/areaevents.cpp
index 842f2d7..d65b11d 100644
--- a/src/libui_sdl/libui/windows/areaevents.cpp
+++ b/src/libui_sdl/libui/windows/areaevents.cpp
@@ -101,7 +101,7 @@ static void areaMouseEvent(uiArea *a, int down, int  up, WPARAM wParam, LPARAM l
 	xpix = (double) GET_X_LPARAM(lParam);
 	ypix = (double) GET_Y_LPARAM(lParam);
 	// these are in pixels; we need points
-	pixelsToDIP(a, &xpix, &ypix);
+	//pixelsToDIP(a, &xpix, &ypix);
 	me.X = xpix;
 	me.Y = ypix;
 	if (a->scrolling) {
diff --git a/src/libui_sdl/libui/windows/areautil.cpp b/src/libui_sdl/libui/windows/areautil.cpp
index 9dc72fb..212ea42 100644
--- a/src/libui_sdl/libui/windows/areautil.cpp
+++ b/src/libui_sdl/libui/windows/areautil.cpp
@@ -14,6 +14,7 @@ void loadAreaSize(uiArea *a, ID2D1RenderTarget *rt, double *width, double *heigh
 		size = realGetSize(rt);
 		*width = size.width;
 		*height = size.height;
+		dipToPixels(a, width, height);
 	}
 }
 
diff --git a/src/libui_sdl/libui/windows/draw.cpp b/src/libui_sdl/libui/windows/draw.cpp
index 65f2535..11a777d 100644
--- a/src/libui_sdl/libui/windows/draw.cpp
+++ b/src/libui_sdl/libui/windows/draw.cpp
@@ -560,6 +560,13 @@ void uiDrawBitmapDraw(uiDrawContext* c, uiDrawBitmap* bmp, uiRect* srcrect, uiRe
     D2D_RECT_F _srcrect = D2D1::RectF(srcrect->X, srcrect->Y, srcrect->X+srcrect->Width, srcrect->Y+srcrect->Height);
     D2D_RECT_F _dstrect = D2D1::RectF(dstrect->X, dstrect->Y, dstrect->X+dstrect->Width, dstrect->Y+dstrect->Height);
 
+    float dpix, dpiy;
+    c->rt->GetDpi(&dpix, &dpiy);
+    _srcrect.left   = (_srcrect.left   * 96.0f) / dpix;
+    _srcrect.top    = (_srcrect.top    * 96.0f) / dpiy;
+    _srcrect.right  = (_srcrect.right  * 96.0f) / dpix;
+    _srcrect.bottom = (_srcrect.bottom * 96.0f) / dpiy;
+
     c->rt->DrawBitmap(bmp->bmp, &_dstrect, 1.0f, filter ? D2D1_BITMAP_INTERPOLATION_MODE_LINEAR : D2D1_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR, &_srcrect);
 }
 
diff --git a/src/libui_sdl/libui/windows/init.cpp b/src/libui_sdl/libui/windows/init.cpp
index 2287416..5b4fe1d 100644
--- a/src/libui_sdl/libui/windows/init.cpp
+++ b/src/libui_sdl/libui/windows/init.cpp
@@ -70,7 +70,7 @@ const char *uiInit(uiInitOptions *o)
 	if ((si.dwFlags & STARTF_USESHOWWINDOW) != 0)
 		nCmdShow = si.wShowWindow;
 
-	// LONGTERM set DPI awareness
+	SetProcessDPIAware();
 
 	hDefaultIcon = LoadIconW(NULL, IDI_APPLICATION);
 	if (hDefaultIcon == NULL)
-- 
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