diff options
Diffstat (limited to 'fpdfsdk/pwl/cpwl_scroll_bar.cpp')
| -rw-r--r-- | fpdfsdk/pwl/cpwl_scroll_bar.cpp | 881 |
1 files changed, 881 insertions, 0 deletions
diff --git a/fpdfsdk/pwl/cpwl_scroll_bar.cpp b/fpdfsdk/pwl/cpwl_scroll_bar.cpp new file mode 100644 index 0000000000..19e4bc8b5f --- /dev/null +++ b/fpdfsdk/pwl/cpwl_scroll_bar.cpp @@ -0,0 +1,881 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "fpdfsdk/pwl/cpwl_scroll_bar.h" + +#include <algorithm> +#include <sstream> +#include <vector> + +#include "core/fxge/cfx_pathdata.h" +#include "core/fxge/cfx_renderdevice.h" +#include "fpdfsdk/pwl/cpwl_wnd.h" + +namespace { + +constexpr float kButtonWidth = 9.0f; +constexpr float kPosButtonMinWidth = 2.0f; +constexpr float kTriangleHalfLength = 2.0f; + +} // namespace + +#define PWL_DEFAULT_HEAVYGRAYCOLOR CFX_Color(COLORTYPE_GRAY, 0.50) + +PWL_FLOATRANGE::PWL_FLOATRANGE() { + Default(); +} + +PWL_FLOATRANGE::PWL_FLOATRANGE(float min, float max) { + Set(min, max); +} + +void PWL_FLOATRANGE::Default() { + fMin = 0; + fMax = 0; +} + +void PWL_FLOATRANGE::Set(float min, float max) { + if (min > max) { + fMin = max; + fMax = min; + } else { + fMin = min; + fMax = max; + } +} + +bool PWL_FLOATRANGE::In(float x) const { + return (IsFloatBigger(x, fMin) || IsFloatEqual(x, fMin)) && + (IsFloatSmaller(x, fMax) || IsFloatEqual(x, fMax)); +} + +float PWL_FLOATRANGE::GetWidth() const { + return fMax - fMin; +} + +PWL_SCROLL_PRIVATEDATA::PWL_SCROLL_PRIVATEDATA() { + Default(); +} + +void PWL_SCROLL_PRIVATEDATA::Default() { + ScrollRange.Default(); + fScrollPos = ScrollRange.fMin; + fClientWidth = 0; + fBigStep = 10; + fSmallStep = 1; +} + +void PWL_SCROLL_PRIVATEDATA::SetScrollRange(float min, float max) { + ScrollRange.Set(min, max); + + if (IsFloatSmaller(fScrollPos, ScrollRange.fMin)) + fScrollPos = ScrollRange.fMin; + if (IsFloatBigger(fScrollPos, ScrollRange.fMax)) + fScrollPos = ScrollRange.fMax; +} + +void PWL_SCROLL_PRIVATEDATA::SetClientWidth(float width) { + fClientWidth = width; +} + +void PWL_SCROLL_PRIVATEDATA::SetSmallStep(float step) { + fSmallStep = step; +} + +void PWL_SCROLL_PRIVATEDATA::SetBigStep(float step) { + fBigStep = step; +} + +bool PWL_SCROLL_PRIVATEDATA::SetPos(float pos) { + if (ScrollRange.In(pos)) { + fScrollPos = pos; + return true; + } + return false; +} + +void PWL_SCROLL_PRIVATEDATA::AddSmall() { + if (!SetPos(fScrollPos + fSmallStep)) + SetPos(ScrollRange.fMax); +} + +void PWL_SCROLL_PRIVATEDATA::SubSmall() { + if (!SetPos(fScrollPos - fSmallStep)) + SetPos(ScrollRange.fMin); +} + +void PWL_SCROLL_PRIVATEDATA::AddBig() { + if (!SetPos(fScrollPos + fBigStep)) + SetPos(ScrollRange.fMax); +} + +void PWL_SCROLL_PRIVATEDATA::SubBig() { + if (!SetPos(fScrollPos - fBigStep)) + SetPos(ScrollRange.fMin); +} + +CPWL_SBButton::CPWL_SBButton(PWL_SCROLLBAR_TYPE eScrollBarType, + PWL_SBBUTTON_TYPE eButtonType) { + m_eScrollBarType = eScrollBarType; + m_eSBButtonType = eButtonType; + + m_bMouseDown = false; +} + +CPWL_SBButton::~CPWL_SBButton() {} + +CFX_ByteString CPWL_SBButton::GetClassName() const { + return "CPWL_SBButton"; +} + +void CPWL_SBButton::OnCreate(PWL_CREATEPARAM& cp) { + cp.eCursorType = FXCT_ARROW; +} + +void CPWL_SBButton::DrawThisAppearance(CFX_RenderDevice* pDevice, + CFX_Matrix* pUser2Device) { + if (!IsVisible()) + return; + + CFX_FloatRect rectWnd = GetWindowRect(); + if (rectWnd.IsEmpty()) + return; + + CFX_PointF ptCenter = GetCenterPoint(); + int32_t nTransparency = GetTransparency(); + + if (m_eScrollBarType == SBT_HSCROLL) { + CPWL_Wnd::DrawThisAppearance(pDevice, pUser2Device); + + CFX_PointF pt1; + CFX_PointF pt2; + CFX_PointF pt3; + if (m_eSBButtonType == PSBT_MIN) { + pt1 = CFX_PointF(ptCenter.x - kTriangleHalfLength * 0.5f, ptCenter.y); + pt2 = CFX_PointF(ptCenter.x + kTriangleHalfLength * 0.5f, + ptCenter.y + kTriangleHalfLength); + pt3 = CFX_PointF(ptCenter.x + kTriangleHalfLength * 0.5f, + ptCenter.y - kTriangleHalfLength); + } else if (m_eSBButtonType == PSBT_MAX) { + pt1 = CFX_PointF(ptCenter.x + kTriangleHalfLength * 0.5f, ptCenter.y); + pt2 = CFX_PointF(ptCenter.x - kTriangleHalfLength * 0.5f, + ptCenter.y + kTriangleHalfLength); + pt3 = CFX_PointF(ptCenter.x - kTriangleHalfLength * 0.5f, + ptCenter.y - kTriangleHalfLength); + } + + if (rectWnd.right - rectWnd.left > kTriangleHalfLength * 2 && + rectWnd.top - rectWnd.bottom > kTriangleHalfLength) { + CFX_PathData path; + path.AppendPoint(pt1, FXPT_TYPE::MoveTo, false); + path.AppendPoint(pt2, FXPT_TYPE::LineTo, false); + path.AppendPoint(pt3, FXPT_TYPE::LineTo, false); + path.AppendPoint(pt1, FXPT_TYPE::LineTo, false); + + pDevice->DrawPath(&path, pUser2Device, nullptr, + PWL_DEFAULT_BLACKCOLOR.ToFXColor(nTransparency), 0, + FXFILL_ALTERNATE); + } + return; + } + + // draw border + pDevice->DrawStrokeRect(pUser2Device, rectWnd, + ArgbEncode(nTransparency, 100, 100, 100), 0.0f); + pDevice->DrawStrokeRect(pUser2Device, rectWnd.GetDeflated(0.5f, 0.5f), + ArgbEncode(nTransparency, 255, 255, 255), 1.0f); + + if (m_eSBButtonType != PSBT_POS) { + // draw background + if (IsEnabled()) { + pDevice->DrawShadow(pUser2Device, true, false, + rectWnd.GetDeflated(1.0f, 1.0f), nTransparency, 80, + 220); + } else { + pDevice->DrawFillRect(pUser2Device, rectWnd.GetDeflated(1.0f, 1.0f), + ArgbEncode(255, 255, 255, 255)); + } + + // draw arrow + if (rectWnd.top - rectWnd.bottom > 6.0f) { + float fX = rectWnd.left + 1.5f; + float fY = rectWnd.bottom; + std::vector<CFX_PointF> pts; + if (m_eSBButtonType == PSBT_MIN) { + pts.push_back(CFX_PointF(fX + 2.5f, fY + 4.0f)); + pts.push_back(CFX_PointF(fX + 2.5f, fY + 3.0f)); + pts.push_back(CFX_PointF(fX + 4.5f, fY + 5.0f)); + pts.push_back(CFX_PointF(fX + 6.5f, fY + 3.0f)); + pts.push_back(CFX_PointF(fX + 6.5f, fY + 4.0f)); + pts.push_back(CFX_PointF(fX + 4.5f, fY + 6.0f)); + pts.push_back(CFX_PointF(fX + 2.5f, fY + 4.0f)); + } else { + pts.push_back(CFX_PointF(fX + 2.5f, fY + 5.0f)); + pts.push_back(CFX_PointF(fX + 2.5f, fY + 6.0f)); + pts.push_back(CFX_PointF(fX + 4.5f, fY + 4.0f)); + pts.push_back(CFX_PointF(fX + 6.5f, fY + 6.0f)); + pts.push_back(CFX_PointF(fX + 6.5f, fY + 5.0f)); + pts.push_back(CFX_PointF(fX + 4.5f, fY + 3.0f)); + pts.push_back(CFX_PointF(fX + 2.5f, fY + 5.0f)); + } + pDevice->DrawFillArea(pUser2Device, pts.data(), 7, + IsEnabled() + ? ArgbEncode(nTransparency, 255, 255, 255) + : PWL_DEFAULT_HEAVYGRAYCOLOR.ToFXColor(255)); + } + return; + } + + if (IsEnabled()) { + // draw shadow effect + CFX_PointF ptTop = CFX_PointF(rectWnd.left, rectWnd.top - 1.0f); + CFX_PointF ptBottom = CFX_PointF(rectWnd.left, rectWnd.bottom + 1.0f); + + ptTop.x += 1.5f; + ptBottom.x += 1.5f; + + const FX_COLORREF refs[] = {ArgbEncode(nTransparency, 210, 210, 210), + ArgbEncode(nTransparency, 220, 220, 220), + ArgbEncode(nTransparency, 240, 240, 240), + ArgbEncode(nTransparency, 240, 240, 240), + ArgbEncode(nTransparency, 210, 210, 210), + ArgbEncode(nTransparency, 180, 180, 180), + ArgbEncode(nTransparency, 150, 150, 150), + ArgbEncode(nTransparency, 150, 150, 150), + ArgbEncode(nTransparency, 180, 180, 180), + ArgbEncode(nTransparency, 210, 210, 210)}; + for (FX_COLORREF ref : refs) { + pDevice->DrawStrokeLine(pUser2Device, ptTop, ptBottom, ref, 1.0f); + + ptTop.x += 1.0f; + ptBottom.x += 1.0f; + } + } else { + pDevice->DrawFillRect(pUser2Device, rectWnd.GetDeflated(0.5f, 0.5f), + ArgbEncode(255, 255, 255, 255)); + } + + // draw friction + if (rectWnd.Height() <= 8.0f) + return; + + FX_COLORREF crStroke = ArgbEncode(nTransparency, 120, 120, 120); + if (!IsEnabled()) + crStroke = PWL_DEFAULT_HEAVYGRAYCOLOR.ToFXColor(255); + + float nFrictionWidth = 5.0f; + float nFrictionHeight = 5.5f; + + CFX_PointF ptLeft = CFX_PointF(ptCenter.x - nFrictionWidth / 2.0f, + ptCenter.y - nFrictionHeight / 2.0f + 0.5f); + CFX_PointF ptRight = CFX_PointF(ptCenter.x + nFrictionWidth / 2.0f, + ptCenter.y - nFrictionHeight / 2.0f + 0.5f); + + for (size_t i = 0; i < 3; ++i) { + pDevice->DrawStrokeLine(pUser2Device, ptLeft, ptRight, crStroke, 1.0f); + ptLeft.y += 2.0f; + ptRight.y += 2.0f; + } +} + +bool CPWL_SBButton::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) { + CPWL_Wnd::OnLButtonDown(point, nFlag); + + if (CPWL_Wnd* pParent = GetParentWindow()) + pParent->NotifyLButtonDown(this, point); + + m_bMouseDown = true; + SetCapture(); + + return true; +} + +bool CPWL_SBButton::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) { + CPWL_Wnd::OnLButtonUp(point, nFlag); + + if (CPWL_Wnd* pParent = GetParentWindow()) + pParent->NotifyLButtonUp(this, point); + + m_bMouseDown = false; + ReleaseCapture(); + + return true; +} + +bool CPWL_SBButton::OnMouseMove(const CFX_PointF& point, uint32_t nFlag) { + CPWL_Wnd::OnMouseMove(point, nFlag); + + if (CPWL_Wnd* pParent = GetParentWindow()) + pParent->NotifyMouseMove(this, point); + + return true; +} + +CPWL_ScrollBar::CPWL_ScrollBar(PWL_SCROLLBAR_TYPE sbType) + : m_sbType(sbType), + m_pMinButton(nullptr), + m_pMaxButton(nullptr), + m_pPosButton(nullptr), + m_bMouseDown(false), + m_bMinOrMax(false), + m_bNotifyForever(true) {} + +CPWL_ScrollBar::~CPWL_ScrollBar() {} + +CFX_ByteString CPWL_ScrollBar::GetClassName() const { + return "CPWL_ScrollBar"; +} + +void CPWL_ScrollBar::OnCreate(PWL_CREATEPARAM& cp) { + cp.eCursorType = FXCT_ARROW; +} + +void CPWL_ScrollBar::OnDestroy() { + // Until cleanup takes place in the virtual destructor for CPWL_Wnd + // subclasses, implement the virtual OnDestroy method that does the + // cleanup first, then invokes the superclass OnDestroy ... gee, + // like a dtor would. + m_pMinButton.Release(); + m_pMaxButton.Release(); + m_pPosButton.Release(); + CPWL_Wnd::OnDestroy(); +} + +void CPWL_ScrollBar::RePosChildWnd() { + CFX_FloatRect rcClient = GetClientRect(); + CFX_FloatRect rcMinButton, rcMaxButton; + float fBWidth = 0; + + switch (m_sbType) { + case SBT_HSCROLL: + if (rcClient.right - rcClient.left > + kButtonWidth * 2 + kPosButtonMinWidth + 2) { + rcMinButton = CFX_FloatRect(rcClient.left, rcClient.bottom, + rcClient.left + kButtonWidth, rcClient.top); + rcMaxButton = + CFX_FloatRect(rcClient.right - kButtonWidth, rcClient.bottom, + rcClient.right, rcClient.top); + } else { + fBWidth = (rcClient.right - rcClient.left - kPosButtonMinWidth - 2) / 2; + + if (fBWidth > 0) { + rcMinButton = CFX_FloatRect(rcClient.left, rcClient.bottom, + rcClient.left + fBWidth, rcClient.top); + rcMaxButton = CFX_FloatRect(rcClient.right - fBWidth, rcClient.bottom, + rcClient.right, rcClient.top); + } else { + SetVisible(false); + } + } + break; + case SBT_VSCROLL: + if (IsFloatBigger(rcClient.top - rcClient.bottom, + kButtonWidth * 2 + kPosButtonMinWidth + 2)) { + rcMinButton = CFX_FloatRect(rcClient.left, rcClient.top - kButtonWidth, + rcClient.right, rcClient.top); + rcMaxButton = + CFX_FloatRect(rcClient.left, rcClient.bottom, rcClient.right, + rcClient.bottom + kButtonWidth); + } else { + fBWidth = (rcClient.top - rcClient.bottom - kPosButtonMinWidth - 2) / 2; + + if (IsFloatBigger(fBWidth, 0)) { + rcMinButton = CFX_FloatRect(rcClient.left, rcClient.top - fBWidth, + rcClient.right, rcClient.top); + rcMaxButton = + CFX_FloatRect(rcClient.left, rcClient.bottom, rcClient.right, + rcClient.bottom + fBWidth); + } else { + SetVisible(false); + } + } + break; + } + + if (m_pMinButton) + m_pMinButton->Move(rcMinButton, true, false); + if (m_pMaxButton) + m_pMaxButton->Move(rcMaxButton, true, false); + MovePosButton(false); +} + +void CPWL_ScrollBar::DrawThisAppearance(CFX_RenderDevice* pDevice, + CFX_Matrix* pUser2Device) { + CFX_FloatRect rectWnd = GetWindowRect(); + + if (IsVisible() && !rectWnd.IsEmpty()) { + pDevice->DrawFillRect(pUser2Device, rectWnd, GetBackgroundColor(), + GetTransparency()); + + pDevice->DrawStrokeLine( + pUser2Device, CFX_PointF(rectWnd.left + 2.0f, rectWnd.top - 2.0f), + CFX_PointF(rectWnd.left + 2.0f, rectWnd.bottom + 2.0f), + ArgbEncode(GetTransparency(), 100, 100, 100), 1.0f); + + pDevice->DrawStrokeLine( + pUser2Device, CFX_PointF(rectWnd.right - 2.0f, rectWnd.top - 2.0f), + CFX_PointF(rectWnd.right - 2.0f, rectWnd.bottom + 2.0f), + ArgbEncode(GetTransparency(), 100, 100, 100), 1.0f); + } +} + +bool CPWL_ScrollBar::OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) { + CPWL_Wnd::OnLButtonDown(point, nFlag); + + if (HasFlag(PWS_AUTOTRANSPARENT)) { + if (GetTransparency() != 255) { + SetTransparency(255); + InvalidateRect(); + } + } + + CFX_FloatRect rcMinArea, rcMaxArea; + + if (m_pPosButton && m_pPosButton->IsVisible()) { + CFX_FloatRect rcClient = GetClientRect(); + CFX_FloatRect rcPosButton = m_pPosButton->GetWindowRect(); + + switch (m_sbType) { + case SBT_HSCROLL: + rcMinArea = CFX_FloatRect(rcClient.left + kButtonWidth, rcClient.bottom, + rcPosButton.left, rcClient.top); + rcMaxArea = CFX_FloatRect(rcPosButton.right, rcClient.bottom, + rcClient.right - kButtonWidth, rcClient.top); + + break; + case SBT_VSCROLL: + rcMinArea = CFX_FloatRect(rcClient.left, rcPosButton.top, + rcClient.right, rcClient.top - kButtonWidth); + rcMaxArea = CFX_FloatRect(rcClient.left, rcClient.bottom + kButtonWidth, + rcClient.right, rcPosButton.bottom); + break; + } + + rcMinArea.Normalize(); + rcMaxArea.Normalize(); + + if (rcMinArea.Contains(point)) { + m_sData.SubBig(); + MovePosButton(true); + NotifyScrollWindow(); + } + + if (rcMaxArea.Contains(point)) { + m_sData.AddBig(); + MovePosButton(true); + NotifyScrollWindow(); + } + } + + return true; +} + +bool CPWL_ScrollBar::OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) { + CPWL_Wnd::OnLButtonUp(point, nFlag); + + if (HasFlag(PWS_AUTOTRANSPARENT)) { + if (GetTransparency() != PWL_SCROLLBAR_TRANSPARENCY) { + SetTransparency(PWL_SCROLLBAR_TRANSPARENCY); + InvalidateRect(); + } + } + + EndTimer(); + m_bMouseDown = false; + + return true; +} + +void CPWL_ScrollBar::SetScrollInfo(const PWL_SCROLL_INFO& info) { + if (info == m_OriginInfo) + return; + + m_OriginInfo = info; + float fMax = + std::max(0.0f, info.fContentMax - info.fContentMin - info.fPlateWidth); + SetScrollRange(0, fMax, info.fPlateWidth); + SetScrollStep(info.fBigStep, info.fSmallStep); +} + +void CPWL_ScrollBar::SetScrollPosition(float pos) { + switch (m_sbType) { + case SBT_HSCROLL: + pos = pos - m_OriginInfo.fContentMin; + break; + case SBT_VSCROLL: + pos = m_OriginInfo.fContentMax - pos; + break; + } + SetScrollPos(pos); +} + +void CPWL_ScrollBar::NotifyLButtonDown(CPWL_Wnd* child, const CFX_PointF& pos) { + if (child == m_pMinButton) + OnMinButtonLBDown(pos); + else if (child == m_pMaxButton) + OnMaxButtonLBDown(pos); + else if (child == m_pPosButton) + OnPosButtonLBDown(pos); +} + +void CPWL_ScrollBar::NotifyLButtonUp(CPWL_Wnd* child, const CFX_PointF& pos) { + if (child == m_pMinButton) + OnMinButtonLBUp(pos); + else if (child == m_pMaxButton) + OnMaxButtonLBUp(pos); + else if (child == m_pPosButton) + OnPosButtonLBUp(pos); +} + +void CPWL_ScrollBar::NotifyMouseMove(CPWL_Wnd* child, const CFX_PointF& pos) { + if (child == m_pMinButton) + OnMinButtonMouseMove(pos); + else if (child == m_pMaxButton) + OnMaxButtonMouseMove(pos); + else if (child == m_pPosButton) + OnPosButtonMouseMove(pos); +} + +void CPWL_ScrollBar::CreateButtons(const PWL_CREATEPARAM& cp) { + PWL_CREATEPARAM scp = cp; + scp.pParentWnd = this; + scp.dwBorderWidth = 2; + scp.nBorderStyle = BorderStyle::BEVELED; + + scp.dwFlags = + PWS_VISIBLE | PWS_CHILD | PWS_BORDER | PWS_BACKGROUND | PWS_NOREFRESHCLIP; + + if (!m_pMinButton) { + m_pMinButton = new CPWL_SBButton(m_sbType, PSBT_MIN); + m_pMinButton->Create(scp); + } + + if (!m_pMaxButton) { + m_pMaxButton = new CPWL_SBButton(m_sbType, PSBT_MAX); + m_pMaxButton->Create(scp); + } + + if (!m_pPosButton) { + m_pPosButton = new CPWL_SBButton(m_sbType, PSBT_POS); + m_pPosButton->SetVisible(false); + m_pPosButton->Create(scp); + } +} + +float CPWL_ScrollBar::GetScrollBarWidth() const { + if (!IsVisible()) + return 0; + + return PWL_SCROLLBAR_WIDTH; +} + +void CPWL_ScrollBar::SetScrollRange(float fMin, + float fMax, + float fClientWidth) { + if (m_pPosButton) { + m_sData.SetScrollRange(fMin, fMax); + m_sData.SetClientWidth(fClientWidth); + + if (IsFloatSmaller(m_sData.ScrollRange.GetWidth(), 0.0f)) { + m_pPosButton->SetVisible(false); + } else { + m_pPosButton->SetVisible(true); + MovePosButton(true); + } + } +} + +void CPWL_ScrollBar::SetScrollPos(float fPos) { + float fOldPos = m_sData.fScrollPos; + m_sData.SetPos(fPos); + if (!IsFloatEqual(m_sData.fScrollPos, fOldPos)) + MovePosButton(true); +} + +void CPWL_ScrollBar::SetScrollStep(float fBigStep, float fSmallStep) { + m_sData.SetBigStep(fBigStep); + m_sData.SetSmallStep(fSmallStep); +} + +void CPWL_ScrollBar::MovePosButton(bool bRefresh) { + ASSERT(m_pMinButton); + ASSERT(m_pMaxButton); + + if (m_pPosButton->IsVisible()) { + CFX_FloatRect rcClient; + CFX_FloatRect rcPosArea, rcPosButton; + + rcClient = GetClientRect(); + rcPosArea = GetScrollArea(); + + float fLeft, fRight, fTop, fBottom; + + switch (m_sbType) { + case SBT_HSCROLL: + fLeft = TrueToFace(m_sData.fScrollPos); + fRight = TrueToFace(m_sData.fScrollPos + m_sData.fClientWidth); + + if (fRight - fLeft < kPosButtonMinWidth) + fRight = fLeft + kPosButtonMinWidth; + + if (fRight > rcPosArea.right) { + fRight = rcPosArea.right; + fLeft = fRight - kPosButtonMinWidth; + } + + rcPosButton = + CFX_FloatRect(fLeft, rcPosArea.bottom, fRight, rcPosArea.top); + + break; + case SBT_VSCROLL: + fBottom = TrueToFace(m_sData.fScrollPos + m_sData.fClientWidth); + fTop = TrueToFace(m_sData.fScrollPos); + + if (IsFloatSmaller(fTop - fBottom, kPosButtonMinWidth)) + fBottom = fTop - kPosButtonMinWidth; + + if (IsFloatSmaller(fBottom, rcPosArea.bottom)) { + fBottom = rcPosArea.bottom; + fTop = fBottom + kPosButtonMinWidth; + } + + rcPosButton = + CFX_FloatRect(rcPosArea.left, fBottom, rcPosArea.right, fTop); + + break; + } + + m_pPosButton->Move(rcPosButton, true, bRefresh); + } +} + +void CPWL_ScrollBar::OnMinButtonLBDown(const CFX_PointF& point) { + m_sData.SubSmall(); + MovePosButton(true); + NotifyScrollWindow(); + + m_bMinOrMax = true; + + EndTimer(); + BeginTimer(100); +} + +void CPWL_ScrollBar::OnMinButtonLBUp(const CFX_PointF& point) {} + +void CPWL_ScrollBar::OnMinButtonMouseMove(const CFX_PointF& point) {} + +void CPWL_ScrollBar::OnMaxButtonLBDown(const CFX_PointF& point) { + m_sData.AddSmall(); + MovePosButton(true); + NotifyScrollWindow(); + + m_bMinOrMax = false; + + EndTimer(); + BeginTimer(100); +} + +void CPWL_ScrollBar::OnMaxButtonLBUp(const CFX_PointF& point) {} + +void CPWL_ScrollBar::OnMaxButtonMouseMove(const CFX_PointF& point) {} + +void CPWL_ScrollBar::OnPosButtonLBDown(const CFX_PointF& point) { + m_bMouseDown = true; + + if (m_pPosButton) { + CFX_FloatRect rcPosButton = m_pPosButton->GetWindowRect(); + + switch (m_sbType) { + case SBT_HSCROLL: + m_nOldPos = point.x; + m_fOldPosButton = rcPosButton.left; + break; + case SBT_VSCROLL: + m_nOldPos = point.y; + m_fOldPosButton = rcPosButton.top; + break; + } + } +} + +void CPWL_ScrollBar::OnPosButtonLBUp(const CFX_PointF& point) { + if (m_bMouseDown) { + if (!m_bNotifyForever) + NotifyScrollWindow(); + } + m_bMouseDown = false; +} + +void CPWL_ScrollBar::OnPosButtonMouseMove(const CFX_PointF& point) { + float fOldScrollPos = m_sData.fScrollPos; + + float fNewPos = 0; + + switch (m_sbType) { + case SBT_HSCROLL: + if (fabs(point.x - m_nOldPos) < 1) + return; + fNewPos = FaceToTrue(m_fOldPosButton + point.x - m_nOldPos); + break; + case SBT_VSCROLL: + if (fabs(point.y - m_nOldPos) < 1) + return; + fNewPos = FaceToTrue(m_fOldPosButton + point.y - m_nOldPos); + break; + } + + if (m_bMouseDown) { + switch (m_sbType) { + case SBT_HSCROLL: + + if (IsFloatSmaller(fNewPos, m_sData.ScrollRange.fMin)) { + fNewPos = m_sData.ScrollRange.fMin; + } + + if (IsFloatBigger(fNewPos, m_sData.ScrollRange.fMax)) { + fNewPos = m_sData.ScrollRange.fMax; + } + + m_sData.SetPos(fNewPos); + + break; + case SBT_VSCROLL: + + if (IsFloatSmaller(fNewPos, m_sData.ScrollRange.fMin)) { + fNewPos = m_sData.ScrollRange.fMin; + } + + if (IsFloatBigger(fNewPos, m_sData.ScrollRange.fMax)) { + fNewPos = m_sData.ScrollRange.fMax; + } + + m_sData.SetPos(fNewPos); + + break; + } + + if (!IsFloatEqual(fOldScrollPos, m_sData.fScrollPos)) { + MovePosButton(true); + + if (m_bNotifyForever) + NotifyScrollWindow(); + } + } +} + +void CPWL_ScrollBar::NotifyScrollWindow() { + CPWL_Wnd* pParent = GetParentWindow(); + if (!pParent || m_sbType != SBT_VSCROLL) + return; + + pParent->ScrollWindowVertically(m_OriginInfo.fContentMax - + m_sData.fScrollPos); +} + +CFX_FloatRect CPWL_ScrollBar::GetScrollArea() const { + CFX_FloatRect rcClient = GetClientRect(); + CFX_FloatRect rcArea; + + if (!m_pMinButton || !m_pMaxButton) + return rcClient; + + CFX_FloatRect rcMin = m_pMinButton->GetWindowRect(); + CFX_FloatRect rcMax = m_pMaxButton->GetWindowRect(); + + float fMinWidth = rcMin.right - rcMin.left; + float fMinHeight = rcMin.top - rcMin.bottom; + float fMaxWidth = rcMax.right - rcMax.left; + float fMaxHeight = rcMax.top - rcMax.bottom; + + switch (m_sbType) { + case SBT_HSCROLL: + if (rcClient.right - rcClient.left > fMinWidth + fMaxWidth + 2) { + rcArea = CFX_FloatRect(rcClient.left + fMinWidth + 1, rcClient.bottom, + rcClient.right - fMaxWidth - 1, rcClient.top); + } else { + rcArea = CFX_FloatRect(rcClient.left + fMinWidth + 1, rcClient.bottom, + rcClient.left + fMinWidth + 1, rcClient.top); + } + break; + case SBT_VSCROLL: + if (rcClient.top - rcClient.bottom > fMinHeight + fMaxHeight + 2) { + rcArea = CFX_FloatRect(rcClient.left, rcClient.bottom + fMinHeight + 1, + rcClient.right, rcClient.top - fMaxHeight - 1); + } else { + rcArea = + CFX_FloatRect(rcClient.left, rcClient.bottom + fMinHeight + 1, + rcClient.right, rcClient.bottom + fMinHeight + 1); + } + break; + } + + rcArea.Normalize(); + + return rcArea; +} + +float CPWL_ScrollBar::TrueToFace(float fTrue) { + CFX_FloatRect rcPosArea; + rcPosArea = GetScrollArea(); + + float fFactWidth = m_sData.ScrollRange.GetWidth() + m_sData.fClientWidth; + fFactWidth = fFactWidth == 0 ? 1 : fFactWidth; + + float fFace = 0; + + switch (m_sbType) { + case SBT_HSCROLL: + fFace = rcPosArea.left + + fTrue * (rcPosArea.right - rcPosArea.left) / fFactWidth; + break; + case SBT_VSCROLL: + fFace = rcPosArea.top - + fTrue * (rcPosArea.top - rcPosArea.bottom) / fFactWidth; + break; + } + + return fFace; +} + +float CPWL_ScrollBar::FaceToTrue(float fFace) { + CFX_FloatRect rcPosArea; + rcPosArea = GetScrollArea(); + + float fFactWidth = m_sData.ScrollRange.GetWidth() + m_sData.fClientWidth; + fFactWidth = fFactWidth == 0 ? 1 : fFactWidth; + + float fTrue = 0; + + switch (m_sbType) { + case SBT_HSCROLL: + fTrue = (fFace - rcPosArea.left) * fFactWidth / + (rcPosArea.right - rcPosArea.left); + break; + case SBT_VSCROLL: + fTrue = (rcPosArea.top - fFace) * fFactWidth / + (rcPosArea.top - rcPosArea.bottom); + break; + } + + return fTrue; +} + +void CPWL_ScrollBar::CreateChildWnd(const PWL_CREATEPARAM& cp) { + CreateButtons(cp); +} + +void CPWL_ScrollBar::TimerProc() { + PWL_SCROLL_PRIVATEDATA sTemp = m_sData; + if (m_bMinOrMax) + m_sData.SubSmall(); + else + m_sData.AddSmall(); + + if (sTemp != m_sData) { + MovePosButton(true); + NotifyScrollWindow(); + } +} |