Re: wxAuiNotebook, changing the close button bitmap?

Thanks again for this, it is almost perfect for my needs.

Do you know how to make the tabs slightly wider? When I activate a tab, the 
font is bold (which is good), but then the text is truncated slightly. What 
I mean is, if the tab has the label "company,product", when I select it, I 
get "company,prod...". I'd prefer to keep all the text.

Tony.



On Thursday, 23 November 2023 at 07:55:11 UTC Tony Kennedy wrote:

> Thank you for this. I tried something similar, but only had code 
> for DrawButton which never got called.
>
> All the best,
>
> Tony.
>
> On Wednesday, 22 November 2023 at 18:59:40 UTC PB wrote:
>
>> Hi,
>>
>> *Disclaimer: I know little about wxAUI, just took a look at the sources, 
>> and I am Windows only.*
>>
>> Replacing close button bitmaps in wxAuiSimpleTabArt is very simple but 
>> more complicated with wxAuiDefaultTabArt. wxAuiDefaultTabArt differs 
>> between platforms 
>> <https://github.com/wxWidgets/wxWidgets/blob/14f6f82e46641ef226b23143c1f44570c769176b/include/wx/aui/tabart.h#L320>, 
>> e.g., it actually is wxAuiMSWTabArt on Windows which uses native theme API 
>> to draw the button.
>>
>> Anyway, I tried if using a custom art for the tab works, writing a 
>> proof-of-concept code using a help bitmap as the close button (same for 
>> active and disabled), borrowing the draw methods from the generic tab art 
>> when needed, not caring about how it looks:
>> [image: wx-auintb-art.png]
>>
>> #include <wx/wx.h>
>> #include <wx/artprov.h>
>> #include <wx/aui/auibook.h>
>>
>> class MyAuiSimpleTabArt : public wxAuiSimpleTabArt
>> {
>> public:
>>     MyAuiSimpleTabArt(const wxBitmapBundle& activeCloseBmp, const 
>> wxBitmapBundle& disabledCloseBmp)
>>     {
>>         m_activeCloseBmp = activeCloseBmp;
>>         m_disabledCloseBmp = disabledCloseBmp;
>>     }
>>
>>     wxAuiTabArt* Clone()
>>     {
>>         return new MyAuiSimpleTabArt(*this);
>>     }
>> };
>>
>> class MyAuiDefaultTabArt : public wxAuiDefaultTabArt
>> {
>> public:
>>     MyAuiDefaultTabArt(const wxBitmapBundle& activeCloseBmp, const 
>> wxBitmapBundle& disabledCloseBmp)
>>     {
>>         m_activeCloseBmp = activeCloseBmp;
>>         m_disabledCloseBmp = disabledCloseBmp;
>>     }
>>
>>     // This draws the "Close active tab" button on the far right
>>     void DrawButton(wxDC& dc, wxWindow* wnd, const wxRect& in_rect, int 
>> bitmap_id, int button_state, int orientation, wxRect* out_rect) override
>>     {
>>         // for testing, use generic version
>>         wxAuiGenericTabArt::DrawButton(dc, wnd, in_rect, bitmap_id, 
>> button_state, orientation, out_rect);
>>     }
>>
>>     void DrawTab(wxDC& dc, wxWindow* wnd, const wxAuiNotebookPage& page, 
>> const wxRect& in_rect, int close_button_state, wxRect* out_tab_rect, 
>> wxRect* out_button_rect, int* x_extent) override
>>     {
>>         // for testing, use generic version
>>         wxAuiGenericTabArt::DrawTab(dc, wnd, page, in_rect, 
>> close_button_state, out_tab_rect, out_button_rect, x_extent);
>>     }
>>
>>     wxAuiTabArt* Clone()
>>     {
>>         return new MyAuiDefaultTabArt(*this);
>>     }
>> };
>>
>> class MyFrame : public wxFrame
>> {
>> public:
>>     MyFrame(wxWindow* parent = nullptr) : wxFrame(parent, wxID_ANY, 
>> "Test")
>>     {
>>         const wxBitmapBundle activeClose = 
>> wxArtProvider::GetBitmapBundle(wxART_HELP, wxART_OTHER, wxSize(16,16));
>>         const wxBitmapBundle disabledClose = activeClose;
>>
>>         wxBoxSizer* mainSizer = new wxBoxSizer(wxVERTICAL);
>>
>>         mainSizer->Add(AddNotebook(new MyAuiSimpleTabArt(activeClose, 
>> disabledClose)), wxSizerFlags(1).Expand());
>>         mainSizer->Add(AddNotebook(new MyAuiDefaultTabArt(activeClose, 
>> disabledClose)), wxSizerFlags(1).Expand());
>>         SetSizer(mainSizer);
>>     }
>> private:
>>     wxAuiNotebook* AddNotebook(wxAuiTabArt* tabArt)
>>     {
>>         wxAuiNotebook* notebook = new wxAuiNotebook(this, wxID_ANY, 
>> wxDefaultPosition, wxDefaultSize, wxAUI_NB_CLOSE_BUTTON | 
>> wxAUI_NB_CLOSE_ON_ALL_TABS | wxAUI_NB_DEFAULT_STYLE);
>>
>>         notebook->SetArtProvider(tabArt);
>>         for ( size_t i = 0; i < 10; ++i )
>>             notebook->AddPage(new wxPanel(notebook), 
>> wxString::Format("Page %zu", i), false);
>>         return notebook;
>>     }
>> };
>>
>> class MyApp : public wxApp
>> {
>>     bool OnInit() override
>>     {
>>         (new MyFrame())->Show();
>>         return true;
>>     }
>> }; wxIMPLEMENT_APP(MyApp);
>>
>> To conclude, customizing the tab art seems possible but may require some 
>> effort to look good and work properly on all the platforms.
>>
>> Regards,
>> PB
>>
>

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