diff options
Diffstat (limited to 'chrome/views/client_view.h')
| -rw-r--r-- | chrome/views/client_view.h | 130 |
1 files changed, 51 insertions, 79 deletions
diff --git a/chrome/views/client_view.h b/chrome/views/client_view.h index 8631c44..f83887b 100644 --- a/chrome/views/client_view.h +++ b/chrome/views/client_view.h @@ -27,103 +27,75 @@ // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -#ifndef CHROME_VIEWS_CLIENT_VIEW_H__ -#define CHROME_VIEWS_CLIENT_VIEW_H__ +#ifndef CHROME_VIEWS_CLIENT_VIEW_H_ +#define CHROME_VIEWS_CLIENT_VIEW_H_ -#include "chrome/common/gfx/chrome_font.h" -#include "chrome/views/dialog_delegate.h" -#include "chrome/views/native_button.h" +#include "chrome/views/view.h" namespace ChromeViews { +class DialogClientView; class Window; /////////////////////////////////////////////////////////////////////////////// // ClientView // -// A ClientView is a view representing the "Client" area of a Window. This is -// defined on Windows as being the portion of the window excluding the frame, -// title bar and window controls. -// -// This abstraction is used to provide both the native frame window class -// (ChromeViews::Window) and custom frame window class -// (ChromeViews::ChromeWindow) with a client view container and dialog button -// helper. ChromeWindow is used for all dialogs and windows on Windows XP and -// Windows Vista without Aero, and Window is used on Windows Vista with Aero, -// and so this class allows both Window types to share the same dialog button -// behavior. -// -/////////////////////////////////////////////////////////////////////////////// -class ClientView : public View, - public NativeButton::Listener { +// A ClientView is a View subclass that is used to occupy the "client area" +// of a window. It provides basic information to the window that contains it +// such as non-client hit testing information, sizing etc. Sub-classes of +// ClientView are used to create more elaborate contents, e.g. +// "DialogClientView". +class ClientView : public View { public: + // Constructs a ClientView object for the specified window with the specified + // contents. Since this object is created during the process of creating + // |window|, |contents_view| must be valid so we can determine the initial + // size of |window|. We call GetPreferredSize on |contents_view|, + // which should return something non-zero. ClientView(Window* window, View* contents_view); - virtual ~ClientView(); - - // Adds the dialog buttons required by the supplied WindowDelegate to the - // view. - void ShowDialogButtons(); - - // Updates the enabled state and label of the buttons required by the - // supplied WindowDelegate - void UpdateDialogButtons(); - - // Returns true if the specified point (in screen coordinates) is within the - // resize box area of the window. - bool PointIsInSizeBox(const gfx::Point& point); - - // Accessors in case the user wishes to adjust these buttons. - NativeButton* ok_button() const { return ok_button_; } - NativeButton* cancel_button() const { return cancel_button_; } + virtual ~ClientView() {} + + // Manual RTTI ftw. + virtual DialogClientView* AsDialogClientView() { return NULL; } + + // Returns true to signal that the Window can be closed. Specialized + // ClientView subclasses can override this default behavior to allow the + // close to be blocked until the user corrects mistakes, accepts a warning + // dialog, etc. + virtual bool CanClose() const { return true; } + + // Tests to see if the specified point (in view coordinates) is within the + // bounds of this view. If so, it returns HTCLIENT in this default + // implementation. If it is outside the bounds of this view, this must return + // HTNOWHERE to tell the caller to do further processing to determine where + // in the non-client area it is (if it is). + // Subclasses of ClientView can extend this logic by overriding this method + // to detect if regions within the client area count as parts of the "non- + // client" area. A good example of this is the size box at the bottom right + // corner of resizable dialog boxes. + virtual int NonClientHitTest(const gfx::Point& point); + + // Overridden from View: + virtual void GetPreferredSize(CSize* out); - // View overrides: - virtual void Paint(ChromeCanvas* canvas); - virtual void PaintChildren(ChromeCanvas* canvas); - virtual void Layout(); + protected: + // Overridden from View: virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child); - virtual void DidChangeBounds(const CRect& prev, const CRect& next); - virtual void GetPreferredSize(CSize* out); - virtual bool AcceleratorPressed(const Accelerator& accelerator); + virtual void DidChangeBounds(const CRect& previous, const CRect& current); + virtual void Layout(); - // NativeButton::Listener implementation: - virtual void ButtonPressed(NativeButton* sender); + // Accessors for private data members. + Window* window() const { return window_; } + View* contents_view() const { return contents_view_; } private: - // Paint the size box in the bottom right corner of the window if it is - // resizable. - void PaintSizeBox(ChromeCanvas* canvas); - - // Returns the width of the specified dialog button using the correct font. - int GetButtonWidth(DialogDelegate::DialogButton button); - - // Position and size various sub-views. - void LayoutDialogButtons(); - void LayoutContentsView(); - - bool has_dialog_buttons() const { return ok_button_ || cancel_button_; } - - // The dialog buttons. - NativeButton* ok_button_; - NativeButton* cancel_button_; - // The button-level extra view, NULL unless the dialog delegate supplies one. - View* extra_view_; + // The Window that hosts this ClientView. + Window* window_; - // The layout rect of the size box, when visible. - gfx::Rect size_box_bounds_; - - // The Window that owns us. - Window* owner_; - - // The contents of the client area, supplied by the caller. + // The View that this ClientView contains. View* contents_view_; - - // Static resource initialization - static void InitClass(); - static ChromeFont dialog_button_font_; - - DISALLOW_EVIL_CONSTRUCTORS(ClientView); }; -} +} // namespace ChromeViews -#endif // #ifndef CHROME_VIEWS_CLIENT_VIEW_H__ +#endif // #ifndef CHROME_VIEWS_CLIENT_VIEW_H_
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