131 lines
2.9 KiB
C++
131 lines
2.9 KiB
C++
#include "drag_form.h"
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#include "bitmap_control.h"
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using namespace ui;
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DragForm *DragForm::s_drag_form = NULL;
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HHOOK DragForm::s_mouse_hook = NULL;
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POINT DragForm::s_point_offset = { 0, 0 };
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const LPCTSTR DragForm::kClassName = L"NimDragForm";
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LRESULT CALLBACK DragForm::LowLevelMouseProc(int nCode, WPARAM wParam, LPARAM lParam)
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{
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if (nCode == HC_ACTION)
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{
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if (wParam == WM_MOUSEMOVE &&::GetKeyState(VK_LBUTTON) < 0)
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{
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MOUSEHOOKSTRUCT *pMouseStruct = (MOUSEHOOKSTRUCT *)lParam;
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if (NULL != pMouseStruct)
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{
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if (NULL != s_drag_form)
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{
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//系统拖拽窗口。标题：Drag，类名：SysDragImage，GWL_EXSTYLE:524456
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//WS_EX_TOPMOST--WS_EX_TRANSPARENT--WS_EX_PALETTEWINDOW--WS_EX_LAYERED--WS_EX_TOOLWINDOW
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ui::UiRect rc(pMouseStruct->pt.x - s_point_offset.x, pMouseStruct->pt.y - s_point_offset.y, 0, 0);
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s_drag_form->SetPos(rc, false, SWP_NOSIZE);
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}
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}
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}
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}
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return CallNextHookEx(s_mouse_hook, nCode, wParam, lParam);
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}
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void DragForm::CreateCustomDragImage(HBITMAP bitmap, POINT pt_offset)
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{
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ASSERT(NULL != bitmap);
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s_mouse_hook = SetWindowsHookEx(WH_MOUSE_LL, (HOOKPROC)DragForm::LowLevelMouseProc, GetModuleHandle(NULL), 0);
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s_drag_form = DragForm::CreateDragForm(bitmap, pt_offset);
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s_point_offset = pt_offset;
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}
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void DragForm::CloseCustomDragImage()
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{
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if (NULL != s_drag_form)
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{
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s_drag_form->Close();
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s_drag_form = NULL;
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}
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if (NULL != s_mouse_hook)
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{
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UnhookWindowsHookEx(s_mouse_hook);
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s_mouse_hook = NULL;
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}
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}
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DragForm* DragForm::CreateDragForm(HBITMAP bitmap, POINT pt_offset)
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{
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DragForm *drag_form = new DragForm;
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HWND hwnd = drag_form->Create(NULL, kClassName, UI_WNDSTYLE_FRAME, WS_EX_TOPMOST | WS_EX_TRANSPARENT | WS_EX_LAYERED | WS_EX_TOOLWINDOW);
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ASSERT(hwnd != NULL);
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drag_form->SetDragImage(bitmap);
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POINT pt;
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BITMAP bitmap_info;
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::GetCursorPos(&pt);
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GetObject(bitmap, sizeof(BITMAP), &bitmap_info);
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// 窗口初始化到鼠标光标的中上方位置
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UiRect rect;
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rect.left = pt.x - pt_offset.x;
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rect.top = pt.y - pt_offset.y;
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rect.right = rect.left + bitmap_info.bmWidth;
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rect.bottom = rect.top + bitmap_info.bmHeight;
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drag_form->SetPos(rect, false, SWP_SHOWWINDOW);
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return drag_form;
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}
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DragForm::DragForm()
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{
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bitmap_control_ = NULL;
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}
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std::wstring DragForm::GetSkinFolder()
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{
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return L"multi_browser";
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}
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std::wstring DragForm::GetSkinFile()
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{
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return L"drag_form.xml";
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}
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ui::Control* DragForm::CreateControl(const std::wstring& pstrClass)
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{
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if (pstrClass == L"BitmapControl")
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{
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return new BitmapControl;
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}
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return NULL;
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}
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std::wstring DragForm::GetWindowClassName() const
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{
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return kClassName;
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}
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UINT DragForm::GetClassStyle() const
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{
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return (UI_CLASSSTYLE_FRAME);
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}
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void DragForm::InitWindow()
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{
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bitmap_control_ = static_cast<BitmapControl*>(FindControl(L"bitmap"));
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ASSERT(NULL != bitmap_control_);
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// 设置背景透明度
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bitmap_control_->SetAlpha(128);
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this->SetFocus(bitmap_control_);
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}
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void DragForm::SetDragImage(HBITMAP bitmap)
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{
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ASSERT(NULL != bitmap);
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bitmap_control_->SetBitmapImage(bitmap);
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} |