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Added alpha support for 32bit bitmaps
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@Viciten
Viciten committed Aug 24, 2020
1 parent 3ab2ebf commit 134d532
Showing 1 changed file with 69 additions and 72 deletions.
141 changes: 69 additions & 72 deletions S4ModApi/CCustomUi.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -43,9 +43,9 @@ CCustomUi::CCustomUi(LPCS4CUSTOMUIELEMENT param) :
auto mod = param->mod;
if (param->szImg) {
if (m_flags & S4_CUSTOMUIFLAGS_FROMRES_IMG) {
m_hImg = (HBITMAP)LoadImageW(mod, param->szImg, IMAGE_BITMAP, 0, 0, 0);
m_hImg = (HBITMAP)LoadImageW(mod, param->szImg, IMAGE_BITMAP, 0, 0, 0 | LR_LOADTRANSPARENT);
} else {
m_hImg = (HBITMAP)LoadImageW(NULL, param->szImg, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
m_hImg = (HBITMAP)LoadImageW(NULL, param->szImg, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_LOADTRANSPARENT);
}
if (m_hImg) {
BITMAP bm;
Expand All @@ -56,9 +56,9 @@ CCustomUi::CCustomUi(LPCS4CUSTOMUIELEMENT param) :
} else { LOG("LoadImageW failed with error " << dec << GetLastError()); m_hImg = NULL; }
if (param->szImgHover) {
if (m_flags & S4_CUSTOMUIFLAGS_FROMRES_IMG) {
m_hImgHover = (HBITMAP)LoadImageW(mod, param->szImgHover, IMAGE_BITMAP, 0, 0, 0);
m_hImgHover = (HBITMAP)LoadImageW(mod, param->szImgHover, IMAGE_BITMAP, 0, 0, 0 | LR_LOADTRANSPARENT);
} else {
m_hImgHover = (HBITMAP)LoadImageW(NULL, param->szImgHover, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
m_hImgHover = (HBITMAP)LoadImageW(NULL, param->szImgHover, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_LOADTRANSPARENT);
}
if (m_hImgHover) {
BITMAP bm;
Expand All @@ -69,9 +69,9 @@ CCustomUi::CCustomUi(LPCS4CUSTOMUIELEMENT param) :
} else { LOG("LoadImageW failed with error " << dec << GetLastError()); m_hImgHover = NULL; }
if (param->szImgSelected) {
if (m_flags & S4_CUSTOMUIFLAGS_FROMRES_IMG) {
m_hImgSelected = (HBITMAP)LoadImageW(mod, param->szImgSelected, IMAGE_BITMAP, 0, 0, 0);
m_hImgSelected = (HBITMAP)LoadImageW(mod, param->szImgSelected, IMAGE_BITMAP, 0, 0, 0 | LR_LOADTRANSPARENT);
} else {
m_hImgSelected = (HBITMAP)LoadImageW(NULL, param->szImgSelected, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
m_hImgSelected = (HBITMAP)LoadImageW(NULL, param->szImgSelected, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_LOADTRANSPARENT);
}
if (m_hImgSelected) {
BITMAP bm;
Expand All @@ -82,10 +82,10 @@ CCustomUi::CCustomUi(LPCS4CUSTOMUIELEMENT param) :
} else { LOG("LoadImageW failed with error " << dec << GetLastError()); m_hImgSelected = NULL; }
if (param->szImgSelectedHover) {
if (m_flags & S4_CUSTOMUIFLAGS_FROMRES_IMG) {
m_hImgSelectedHover = (HBITMAP)LoadImageW(mod, param->szImgSelectedHover, IMAGE_BITMAP, 0, 0, 0);
m_hImgSelectedHover = (HBITMAP)LoadImageW(mod, param->szImgSelectedHover, IMAGE_BITMAP, 0, 0, 0 | LR_LOADTRANSPARENT);
}
else {
m_hImgSelectedHover = (HBITMAP)LoadImageW(NULL, param->szImgSelectedHover, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
m_hImgSelectedHover = (HBITMAP)LoadImageW(NULL, param->szImgSelectedHover, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_LOADTRANSPARENT);
}
if (m_hImgSelectedHover) {
BITMAP bm;
Expand Down Expand Up @@ -188,91 +188,72 @@ BOOL CCustomUi::OnDraw(HDC hdc, const POINT* cursor) {
return FALSE;
}

POINT p = *cursor;
const POINT& p = *cursor;
bool newstate = false;
HBITMAP hBm = NULL;
RECT *pRect = NULL;
const bool leftbutton = GetAsyncKeyState(VK_LBUTTON) < 0;

INT pillarboxWidth = 0;
if ((m_flags & S4_CUSTOMUIFLAGS_NO_PILLARBOX) == 0) {
auto pPillarboxWidth = S4::GetInstance().PillarboxWidth;
if (pPillarboxWidth) pillarboxWidth = *pPillarboxWidth;
}

p.x -= pillarboxWidth;

switch (m_state) {
case S4_CUSTOM_UI_UNSELECTED: {
if (m_hImgHover && PtInRect(&m_rect, p)) {
newstate = true;
m_state = S4_CUSTOM_UI_HOVERING;
goto lbl_S4_CUSTOM_UI_HOVERING;
}
lbl_S4_CUSTOM_UI_UNSELECTED:
if (PtInRect(&m_rect, p)) {
if (m_hImgHover) {
if (newstate) break; // protect from infinite loop
newstate = true;
m_state = S4_CUSTOM_UI_HOVERING;
goto lbl_S4_CUSTOM_UI_HOVERING;
}
if (leftbutton) {
if (m_hImgSelectedHover) {
hBm = m_hImgSelectedHover;
pRect = &m_selectedHoverRect;
}
else {
if (m_hImgHover) {
hBm = m_hImgHover;
pRect = &m_hoverRect;
}
else {
hBm = m_hImg;
pRect = &m_rect;
}
}
break;
}
}
hBm = m_hImg;
pRect = &m_rect;
break;
}
case S4_CUSTOM_UI_SELECTED: {
lbl_S4_CUSTOM_UI_SELECTED:
if (PtInRect(&m_selectedRect, p)) {
if (GetAsyncKeyState(VK_LBUTTON) < 0) {
if (m_hImgSelectedHover) {
if (newstate) break;
newstate = true;
m_state = S4_CUSTOM_UI_HOVERING_SELECTED;
goto lbl_S4_CUSTOM_UI_HOVERING_SELECTED;
}
if (leftbutton) {
hBm = m_hImgSelectedHover;
pRect = &m_selectedHoverRect;
} else {
if (m_hImgHover) {
hBm = m_hImgHover;
pRect = &m_hoverRect;
}
else {
} else {
hBm = m_hImg;
pRect = &m_rect;
}
break;
}
}
if (m_hImgSelected) {
hBm = m_hImgSelected;
pRect = &m_selectedRect;
} else {
hBm = m_hImg;
pRect = &m_rect;
}
break;
}
case S4_CUSTOM_UI_SELECTED: {
if (m_hImgSelectedHover && PtInRect(&m_selectedRect, p)) {
newstate = true;
m_state = S4_CUSTOM_UI_HOVERING_SELECTED;
goto lbl_S4_CUSTOM_UI_HOVERING_SELECTED;
}
lbl_S4_CUSTOM_UI_SELECTED:
if (GetAsyncKeyState(VK_LBUTTON) < 0) {
if (m_hImgHover) {
hBm = m_hImgHover;
pRect = &m_hoverRect;
} else {
hBm = m_hImg;
pRect = &m_rect;
}
} else {
if (m_hImgSelected) {
hBm = m_hImgSelected;
pRect = &m_selectedRect;
} else {
hBm = m_hImg;
pRect = &m_rect;
}
}
break;
}
case S4_CUSTOM_UI_HOVERING: {
lbl_S4_CUSTOM_UI_HOVERING:
if (!PtInRect(&m_hoverRect, p)) {
if (newstate) break;
newstate = true;
m_state = S4_CUSTOM_UI_UNSELECTED;
goto lbl_S4_CUSTOM_UI_UNSELECTED;
}
if (leftbutton) {
lbl_S4_CUSTOM_UI_HOVERING:
if (GetAsyncKeyState(VK_LBUTTON) < 0) {
if (m_hImgSelectedHover) {
hBm = m_hImgSelectedHover;
pRect = &m_selectedHoverRect;
Expand All @@ -297,14 +278,13 @@ BOOL CCustomUi::OnDraw(HDC hdc, const POINT* cursor) {
break;
}
case S4_CUSTOM_UI_HOVERING_SELECTED: {
lbl_S4_CUSTOM_UI_HOVERING_SELECTED:
if (!PtInRect(&m_selectedHoverRect, p)) {
if (newstate) break;
newstate = true;
m_state = S4_CUSTOM_UI_SELECTED;
goto lbl_S4_CUSTOM_UI_SELECTED;
}
if (leftbutton) {
lbl_S4_CUSTOM_UI_HOVERING_SELECTED:
if (GetAsyncKeyState(VK_LBUTTON) < 0) {
if (m_hImgHover) {
hBm = m_hImgHover;
pRect = &m_hoverRect;
Expand Down Expand Up @@ -345,6 +325,12 @@ BOOL CCustomUi::OnDraw(HDC hdc, const POINT* cursor) {
return FALSE;
}

INT pillarboxWidth = 0;
if ((m_flags & S4_CUSTOMUIFLAGS_NO_PILLARBOX) == 0) {
auto pPillarboxWidth = S4::GetInstance().PillarboxWidth;
if (pPillarboxWidth) pillarboxWidth = *pPillarboxWidth;
}

LOG("pillarbox == " << dec << pillarboxWidth)
m_position = *pRect;
m_position.left += pillarboxWidth;
Expand All @@ -355,14 +341,25 @@ BOOL CCustomUi::OnDraw(HDC hdc, const POINT* cursor) {
HDC memDc = CreateCompatibleDC(hdc);
if (memDc) {
std::lock_guard<decltype(m_bitmap_mtx)> lock(m_bitmap_mtx);

SelectObject(memDc, hBm);
if (!BitBlt(hdc,

BLENDFUNCTION fnc;
fnc.BlendOp = AC_SRC_OVER;
fnc.BlendFlags = 0;
fnc.SourceConstantAlpha = 0xFF;
fnc.AlphaFormat = AC_SRC_ALPHA;
BITMAP bm;
GetObject(hBm, sizeof(BITMAP), &bm);
int width = bm.bmWidth;
int height = bm.bmHeight;
if (!AlphaBlend(hdc,
m_position.left,
m_position.top,
m_position.right - m_position.left,
m_position.bottom - m_position.top,
memDc, 0, 0, SRCCOPY)) {
LOG("BitBlt failed with error code " << dec << GetLastError())
memDc, 0, 0, width, height, fnc)) {
LOG("AlphaBlend failed with error code " << dec << GetLastError())
}
DeleteDC(memDc);
} else { LOG("bad memory DC for " << HEXNUM(this)) }
Expand Down

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