mirror of
https://github.com/narzoul/DDrawCompat
synced 2024-12-30 08:55:36 +01:00
Added manual rendering of scroll bar arrows
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narzoul
parent
ab35223c2f
commit
66ebcd7696
171
DDrawCompat/CompatGdiScrollBar.cpp
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171
DDrawCompat/CompatGdiScrollBar.cpp
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@ -0,0 +1,171 @@
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#include "CompatGdi.h"
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#include "CompatGdiScrollBar.h"
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namespace
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{
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enum ScrollBarInfoIndex
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{
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SBII_SCROLLBAR = 0,
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SBII_TOP_RIGHT_ARROW = 1,
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SBII_PAGEUP_PAGERIGHT_REGION = 2,
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SBII_THUMB = 3,
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SBII_PAGEDOWN_PAGELEFT_REGION = 4,
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SBII_BOTTOM_LEFT_ARROW = 5
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};
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}
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namespace CompatGdi
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{
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ScrollBar::ScrollBar(HWND hwnd, HDC compatDc) :
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m_hwnd(hwnd), m_compatDc(compatDc), m_windowRect(),
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m_isLeftMouseButtonDown(false), m_cursorPos(),
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m_horizontalSbi(), m_verticalSbi()
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{
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const LONG windowStyle = GetWindowLongPtr(hwnd, GWL_STYLE);
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m_horizontalSbi.isVisible = 0 != (windowStyle & WS_HSCROLL);
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m_verticalSbi.isVisible = 0 != (windowStyle & WS_VSCROLL);
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if (m_horizontalSbi.isVisible || m_verticalSbi.isVisible)
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{
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GetWindowRect(hwnd, &m_windowRect);
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m_isLeftMouseButtonDown =
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hwnd == GetCapture() &&
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GetAsyncKeyState(GetSystemMetrics(SM_SWAPBUTTON) ? VK_RBUTTON : VK_LBUTTON) < 0 &&
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GetCursorPos(&m_cursorPos);
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if (m_isLeftMouseButtonDown)
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{
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m_cursorPos.x -= m_windowRect.left;
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m_cursorPos.y -= m_windowRect.top;
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}
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if (m_horizontalSbi.isVisible)
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{
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m_horizontalSbi = getScrollBarInfo(OBJID_HSCROLL);
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}
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if (m_verticalSbi.isVisible)
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{
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m_verticalSbi = getScrollBarInfo(OBJID_VSCROLL);
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}
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}
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}
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void ScrollBar::drawAll() const
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{
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drawHorizArrows();
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drawVertArrows();
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}
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void ScrollBar::drawArrow(const ScrollBarChildInfo& sbci, UINT dfcState) const
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{
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UINT stateFlags = 0;
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if (sbci.state & STATE_SYSTEM_UNAVAILABLE)
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{
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stateFlags |= DFCS_INACTIVE;
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}
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else if (sbci.state & STATE_SYSTEM_PRESSED)
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{
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stateFlags |= DFCS_PUSHED;
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}
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RECT rect = sbci.rect;
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CALL_ORIG_GDI(DrawFrameControl)(m_compatDc, &rect, DFC_SCROLL, dfcState | stateFlags);
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}
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void ScrollBar::drawHorizArrows() const
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{
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if (m_horizontalSbi.isVisible)
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{
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drawArrow(m_horizontalSbi.topLeftArrow, DFCS_SCROLLLEFT);
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drawArrow(m_horizontalSbi.bottomRightArrow, DFCS_SCROLLRIGHT);
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}
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}
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void ScrollBar::drawVertArrows() const
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{
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if (m_verticalSbi.isVisible)
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{
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drawArrow(m_verticalSbi.topLeftArrow, DFCS_SCROLLUP);
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drawArrow(m_verticalSbi.bottomRightArrow, DFCS_SCROLLDOWN);
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}
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}
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void ScrollBar::excludeFromClipRegion(const RECT& rect) const
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{
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ExcludeClipRect(m_compatDc, rect.left, rect.top, rect.right, rect.bottom);
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}
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void ScrollBar::excludeFromClipRegion(const ScrollBarInfo& sbi) const
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{
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if (sbi.isVisible)
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{
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excludeFromClipRegion(sbi.topLeftArrow.rect);
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excludeFromClipRegion(sbi.bottomRightArrow.rect);
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}
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}
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void ScrollBar::excludeFromClipRegion() const
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{
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excludeFromClipRegion(m_horizontalSbi);
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excludeFromClipRegion(m_verticalSbi);
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}
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ScrollBar::ScrollBarInfo ScrollBar::getScrollBarInfo(LONG objId) const
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{
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ScrollBarInfo scrollBarInfo = {};
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SCROLLBARINFO sbi = {};
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sbi.cbSize = sizeof(sbi);
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scrollBarInfo.isVisible = GetScrollBarInfo(m_hwnd, objId, &sbi) &&
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!(sbi.rgstate[SBII_SCROLLBAR] & (STATE_SYSTEM_INVISIBLE | STATE_SYSTEM_OFFSCREEN));
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if (!scrollBarInfo.isVisible)
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{
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return scrollBarInfo;
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}
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OffsetRect(&sbi.rcScrollBar, -m_windowRect.left, -m_windowRect.top);
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scrollBarInfo.topLeftArrow.rect = sbi.rcScrollBar;
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scrollBarInfo.bottomRightArrow.rect = sbi.rcScrollBar;
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if (OBJID_HSCROLL == objId)
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{
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const int w = GetSystemMetrics(SM_CXHSCROLL);
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scrollBarInfo.topLeftArrow.rect.right = scrollBarInfo.topLeftArrow.rect.left + w;
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scrollBarInfo.topLeftArrow.state = sbi.rgstate[SBII_BOTTOM_LEFT_ARROW];
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scrollBarInfo.bottomRightArrow.rect.left = scrollBarInfo.bottomRightArrow.rect.right - w;
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scrollBarInfo.bottomRightArrow.state = sbi.rgstate[SBII_TOP_RIGHT_ARROW];
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}
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else
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{
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const int h = GetSystemMetrics(SM_CYVSCROLL);
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scrollBarInfo.topLeftArrow.rect.bottom = scrollBarInfo.topLeftArrow.rect.top + h;
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scrollBarInfo.topLeftArrow.state = sbi.rgstate[SBII_TOP_RIGHT_ARROW];
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scrollBarInfo.bottomRightArrow.rect.top = scrollBarInfo.bottomRightArrow.rect.bottom - h;
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scrollBarInfo.bottomRightArrow.state = sbi.rgstate[SBII_BOTTOM_LEFT_ARROW];
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}
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if (m_isLeftMouseButtonDown)
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{
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setPressedState(scrollBarInfo.topLeftArrow);
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setPressedState(scrollBarInfo.bottomRightArrow);
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}
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return scrollBarInfo;
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}
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void ScrollBar::setPressedState(ScrollBarChildInfo& sbci) const
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{
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if (!(sbci.state & STATE_SYSTEM_UNAVAILABLE) && PtInRect(&sbci.rect, m_cursorPos))
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{
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sbci.state |= STATE_SYSTEM_PRESSED;
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}
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}
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}
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47
DDrawCompat/CompatGdiScrollBar.h
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47
DDrawCompat/CompatGdiScrollBar.h
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@ -0,0 +1,47 @@
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#pragma once
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#define WIN32_LEAN_AND_MEAN
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#include <Windows.h>
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namespace CompatGdi
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{
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class ScrollBar
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{
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public:
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ScrollBar(HWND hwnd, HDC compatDc);
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void drawAll() const;
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void drawHorizArrows() const;
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void drawVertArrows() const;
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void excludeFromClipRegion() const;
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private:
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struct ScrollBarChildInfo
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{
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RECT rect;
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LONG state;
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};
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struct ScrollBarInfo
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{
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ScrollBarChildInfo topLeftArrow;
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ScrollBarChildInfo bottomRightArrow;
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bool isVisible;
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};
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void drawArrow(const ScrollBarChildInfo& sbci, UINT dfcState) const;
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void excludeFromClipRegion(const RECT& rect) const;
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void excludeFromClipRegion(const ScrollBarInfo& sbi) const;
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ScrollBarInfo getScrollBarInfo(LONG objId) const;
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void setPressedState(ScrollBarChildInfo& sbci) const;
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HWND m_hwnd;
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HDC m_compatDc;
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RECT m_windowRect;
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bool m_isLeftMouseButtonDown;
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POINT m_cursorPos;
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ScrollBarInfo m_horizontalSbi;
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ScrollBarInfo m_verticalSbi;
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};
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}
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@ -5,6 +5,7 @@
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#include "CompatGdi.h"
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#include "CompatGdiDc.h"
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#include "CompatGdiScrollBar.h"
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#include "CompatGdiTitleBar.h"
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#include "CompatGdiWinProc.h"
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#include "DDrawLog.h"
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@ -159,6 +160,10 @@ namespace
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titleBar.drawAll();
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titleBar.excludeFromClipRegion();
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CompatGdi::ScrollBar scrollBar(hwnd, compatDc);
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scrollBar.drawAll();
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scrollBar.excludeFromClipRegion();
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OffsetRect(&clientRect, clientOrigin.x - windowRect.left, clientOrigin.y - windowRect.top);
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ExcludeClipRect(compatDc, clientRect.left, clientRect.top, clientRect.right, clientRect.bottom);
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CALL_ORIG_GDI(BitBlt)(compatDc, 0, 0,
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@ -182,7 +187,7 @@ namespace
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DWORD /*dwEventThread*/,
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DWORD /*dwmsEventTime*/)
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{
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if (OBJID_TITLEBAR == idObject)
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if (OBJID_TITLEBAR == idObject || OBJID_HSCROLL == idObject || OBJID_VSCROLL == idObject)
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{
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if (!hwnd || !CompatGdi::beginGdiRendering())
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{
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@ -193,7 +198,18 @@ namespace
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HDC compatDc = CompatGdiDc::getDc(windowDc);
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if (compatDc)
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{
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CompatGdi::TitleBar(hwnd, compatDc).drawAll();
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if (OBJID_TITLEBAR == idObject)
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{
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CompatGdi::TitleBar(hwnd, compatDc).drawAll();
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}
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else if (OBJID_HSCROLL == idObject)
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{
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CompatGdi::ScrollBar(hwnd, compatDc).drawHorizArrows();
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}
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else if (OBJID_VSCROLL == idObject)
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{
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CompatGdi::ScrollBar(hwnd, compatDc).drawVertArrows();
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}
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CompatGdiDc::releaseDc(windowDc);
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}
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@ -150,6 +150,7 @@
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<ClInclude Include="CompatGdiDc.h" />
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<ClInclude Include="CompatGdiDcCache.h" />
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<ClInclude Include="CompatGdiFunctions.h" />
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<ClInclude Include="CompatGdiScrollBar.h" />
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<ClInclude Include="CompatGdiTitleBar.h" />
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<ClInclude Include="CompatGdiWinProc.h" />
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<ClInclude Include="Config.h" />
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@ -176,6 +177,7 @@
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<ClCompile Include="CompatGdiCaret.cpp" />
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<ClCompile Include="CompatGdiDcCache.cpp" />
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<ClCompile Include="CompatGdiFunctions.cpp" />
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<ClCompile Include="CompatGdiScrollBar.cpp" />
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<ClCompile Include="CompatGdiTitleBar.cpp" />
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<ClCompile Include="CompatGdiWinProc.cpp" />
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<ClCompile Include="CompatVtable.cpp" />
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@ -84,6 +84,9 @@
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<ClInclude Include="CompatGdiTitleBar.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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<ClInclude Include="CompatGdiScrollBar.h">
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<Filter>Header Files</Filter>
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</ClInclude>
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</ItemGroup>
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<ItemGroup>
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<ClCompile Include="DllMain.cpp">
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@ -140,6 +143,9 @@
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<ClCompile Include="CompatGdiTitleBar.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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<ClCompile Include="CompatGdiScrollBar.cpp">
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<Filter>Source Files</Filter>
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</ClCompile>
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</ItemGroup>
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<ItemGroup>
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<None Include="DDrawCompat.def">
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