+/**
+ Abstract interface to a HTML rendering window (such as wxHtmlWindow or
+ wxHtmlListBox) that is passed to wxHtmlWinParser. It encapsulates all
+ communication from the parser to the window.
+ */
+class WXDLLIMPEXP_HTML wxHtmlWindowInterface
+{
+public:
+ /// Ctor
+ wxHtmlWindowInterface() {}
+ virtual ~wxHtmlWindowInterface() {}
+
+ /**
+ Called by the parser to set window's title to given text.
+ */
+ virtual void SetHTMLWindowTitle(const wxString& title) = 0;
+
+ /**
+ Called when a link is clicked.
+
+ @param link information about the clicked link
+ */
+ virtual void OnHTMLLinkClicked(const wxHtmlLinkInfo& link) = 0;
+
+ /**
+ Called when the parser needs to open another URL (e.g. an image).
+
+ @param type Type of the URL request (e.g. image)
+ @param url URL the parser wants to open
+ @param redirect If the return value is wxHTML_REDIRECT, then the
+ URL to redirect to will be stored in this variable
+ (the pointer must never be NULL)
+
+ @return indicator of how to treat the request
+ */
+ virtual wxHtmlOpeningStatus OnHTMLOpeningURL(wxHtmlURLType type,
+ const wxString& url,
+ wxString *redirect) const = 0;
+
+ /**
+ Converts coordinates @a pos relative to given @a cell to
+ physical coordinates in the window.
+ */
+ virtual wxPoint HTMLCoordsToWindow(wxHtmlCell *cell,
+ const wxPoint& pos) const = 0;
+
+ /// Returns the window used for rendering (may be NULL).
+ virtual wxWindow* GetHTMLWindow() = 0;
+
+ /// Returns background colour to use by default.
+ virtual wxColour GetHTMLBackgroundColour() const = 0;
+
+ /// Sets window's background to colour @a clr.
+ virtual void SetHTMLBackgroundColour(const wxColour& clr) = 0;
+
+ /// Sets window's background to given bitmap.
+ virtual void SetHTMLBackgroundImage(const wxBitmap& bmpBg) = 0;
+
+ /// Sets status bar text.
+ virtual void SetHTMLStatusText(const wxString& text) = 0;
+
+ /// Type of mouse cursor
+ enum HTMLCursor
+ {
+ /// Standard mouse cursor (typically an arrow)
+ HTMLCursor_Default,
+ /// Cursor shown over links
+ HTMLCursor_Link,
+ /// Cursor shown over selectable text
+ HTMLCursor_Text
+ };
+
+ /**
+ Returns mouse cursor of given @a type.
+ */
+ virtual wxCursor GetHTMLCursor(HTMLCursor type) const = 0;
+};
+
+/**
+ Helper class that implements part of mouse handling for wxHtmlWindow and
+ wxHtmlListBox. Cursor changes and clicking on links are handled, text
+ selection is not.
+ */
+class WXDLLIMPEXP_HTML wxHtmlWindowMouseHelper
+{
+protected:
+ /**
+ Ctor.
+
+ @param iface Interface to the owner window.
+ */
+ wxHtmlWindowMouseHelper(wxHtmlWindowInterface *iface);
+
+ /**
+ Virtual dtor.
+
+ It is not really needed in this case but at leats it prevents gcc from
+ complaining about its absence.
+ */
+ virtual ~wxHtmlWindowMouseHelper() { }
+
+ /// Returns true if the mouse moved since the last call to HandleIdle
+ bool DidMouseMove() const { return m_tmpMouseMoved; }
+
+ /// Call this from EVT_MOTION event handler
+ void HandleMouseMoved();
+
+ /**
+ Call this from EVT_LEFT_UP handler (or, alternatively, EVT_LEFT_DOWN).
+
+ @param rootCell HTML cell inside which the click occured. This doesn't
+ have to be the leaf cell, it can be e.g. toplevel
+ container, but the mouse must be inside the container's
+ area, otherwise the event would be ignored.
+ @param pos Mouse position in coordinates relative to @a cell
+ @param event The event that triggered the call
+ */
+ bool HandleMouseClick(wxHtmlCell *rootCell,
+ const wxPoint& pos, const wxMouseEvent& event);
+
+ /**
+ Call this from OnInternalIdle of the HTML displaying window. Handles
+ mouse movements and must be used together with HandleMouseMoved.
+
+ @param rootCell HTML cell inside which the click occured. This doesn't
+ have to be the leaf cell, it can be e.g. toplevel
+ container, but the mouse must be inside the container's
+ area, otherwise the event would be ignored.
+ @param pos Current mouse position in coordinates relative to
+ @a cell
+ */
+ void HandleIdle(wxHtmlCell *rootCell, const wxPoint& pos);
+
+ /**
+ Called by HandleIdle when the mouse hovers over a cell. Default
+ behaviour is to do nothing.
+
+ @param cell the cell the mouse is over
+ @param x, y coordinates of mouse relative to the cell
+ */
+ virtual void OnCellMouseHover(wxHtmlCell *cell, wxCoord x, wxCoord y);
+
+ /**
+ Called by HandleMouseClick when the user clicks on a cell.
+ Default behavior is to call wxHtmlWindowInterface::OnLinkClicked()
+ if this cell corresponds to a hypertext link.
+
+ @param cell the cell the mouse is over
+ @param x, y coordinates of mouse relative to the cell
+ @param event The event that triggered the call
+
+
+ @return true if a link was clicked, false otherwise.
+ */
+ virtual bool OnCellClicked(wxHtmlCell *cell,
+ wxCoord x, wxCoord y,
+ const wxMouseEvent& event);
+
+protected:
+ // this flag indicates if the mouse moved (used by HandleIdle)
+ bool m_tmpMouseMoved;
+ // contains last link name
+ wxHtmlLinkInfo *m_tmpLastLink;
+ // contains the last (terminal) cell which contained the mouse
+ wxHtmlCell *m_tmpLastCell;
+
+private:
+ wxHtmlWindowInterface *m_interface;
+};
+
projects / wxWidgets.git / blobdiff