--- /dev/null
+//-----------------------------------------------------------------------------
+// Name: objref.cpp
+// Purpose: XML resources sample: Object references and ID ranges dialog
+// Author: David Hart, Vaclav Slavik
+// RCS-ID: $Id$
+// Copyright: (c) Vaclav Slavik
+// Licence: wxWindows licence
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+// Standard wxWidgets headers
+//-----------------------------------------------------------------------------
+
+// For compilers that support precompilation, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+// For all others, include the necessary headers (this file is usually all you
+// need because it includes almost all "standard" wxWidgets headers)
+#ifndef WX_PRECOMP
+ #include "wx/wx.h"
+#endif
+
+//-----------------------------------------------------------------------------
+// Header of this .cpp file
+//-----------------------------------------------------------------------------
+
+#include "objrefdlg.h"
+
+//-----------------------------------------------------------------------------
+// Remaining headers: Needed wx headers, then wx/contrib headers, then application headers
+//-----------------------------------------------------------------------------
+
+#include "wx/xrc/xmlres.h" // XRC XML resouces
+
+
+
+//-----------------------------------------------------------------------------
+// Public members
+//-----------------------------------------------------------------------------
+ObjrefDialog::ObjrefDialog(wxWindow* parent)
+{
+ wxXmlResource::Get()->LoadDialog(this, parent, wxT("objref_dialog"));
+
+ nb = XRCCTRL(*this, "objref_notebook", wxNotebook);
+ wxCHECK_RET(nb, "failed to find objref_notebook");
+ nb->Bind(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED, &ObjrefDialog::OnNotebookPageChanged, this);
+ iconspage_bound = false;
+ calcpage_bound = false;
+}
+
+ObjrefDialog::~ObjrefDialog()
+{
+ // Select page 0. Otherwise if the Calc page were selected, when it's removed the Icons page is selected
+ // and sets the log target again in idle time, *after* myframe restores the old one!
+ nb->ChangeSelection(0);
+}
+
+//-----------------------------------------------------------------------------
+// Private members (including the event handlers)
+//-----------------------------------------------------------------------------
+void ObjrefDialog::OnNotebookPageChanged( wxNotebookEvent &event )
+{
+ switch(event.GetSelection())
+ {
+ case copy_page:
+ {
+ // This is a straight object reference to the first page
+ // so change the text programmatically
+ nb->SetPageText(copy_page, "Page 1 copy");
+
+ wxNotebookPage *page = nb->GetPage(copy_page);
+ wxTextCtrl *text = XRCCTRL(*page, "description_text", wxTextCtrl);
+ text->ChangeValue(
+ wxString("This is a duplicate of page 1, using an object reference. ")
+ + wxString("It was created by this very simple xml:\n\n")
+ + wxString("<object class=\"notebookpage\">\n\t<object_ref ref=\"page1\"/>\n")
+ + wxString("\t<label>Page 1 copy</label>\n</object>")
+ + wxString("\n\n(Then I'm cheating by inserting this text programmatically.)")
+ );
+ break;
+ }
+
+ case icons_page:
+ {
+ wxNotebookPage *page = nb->GetPage(icons_page);
+ if (!iconspage_bound)
+ {
+ iconspage_bound = true;
+ // We want to direct UpdateUI events for the ID range 'first_row' to OnUpdateUIFirst().
+ // We could achieve this using first_row[0] and first_row[2], but what if a fourth
+ // column were added? It's safer to use the 'typedefs' for the two ends of the range:
+ page->Bind(wxEVT_UPDATE_UI, &ObjrefDialog::OnUpdateUIFirst,
+ this, XRCID("first_row[start]"), XRCID("first_row[end]"));
+ // Similarly for the other two rows
+ page->Bind(wxEVT_UPDATE_UI, &ObjrefDialog::OnUpdateUISecond,
+ this, XRCID("second_row[start]"), XRCID("second_row[end]"));
+ page->Bind(wxEVT_UPDATE_UI, &ObjrefDialog::OnUpdateUIThird,
+ this, XRCID("third_row[start]"), XRCID("third_row[end]"));
+
+ }
+
+ text = XRCCTRL(*page, "log_text", wxTextCtrl);
+ if (text)
+ delete wxLog::SetActiveTarget(new wxLogTextCtrl(text));
+ break;
+ }
+
+ case calc_page:
+ {
+ wxNotebookPage *page = nb->GetPage(calc_page);
+ if (!calcpage_bound)
+ {
+ calcpage_bound = true;
+ // Bind the id ranges, using the [start] and [end] 'typedefs'
+ page->Bind(wxEVT_COMMAND_BUTTON_CLICKED, &ObjrefDialog::OnNumeralClick,
+ this, XRCID("digits[start]"), XRCID("digits[end]"));
+ page->Bind(wxEVT_COMMAND_BUTTON_CLICKED, &ObjrefDialog::OnOperatorClick,
+ this, XRCID("operators[start]"), XRCID("operators[end]"));
+ }
+
+ result_txt = XRCCTRL(*page, "result", wxTextCtrl);
+ text = XRCCTRL(*page, "log_text", wxTextCtrl);
+ if (text)
+ delete wxLog::SetActiveTarget(new wxLogTextCtrl(text));
+
+ ClearCalculator();
+ break;
+ }
+
+ default: return;
+ }
+}
+
+// There are undoubtedly simpler ways of doing all this, but we're demonstrating the use of ID ranges
+void ObjrefDialog::OnUpdateUIFirst(wxUpdateUIEvent& event)
+{
+ // The checkbox with the XRCID 'check[0]' controls this row of icons
+ wxCheckBox *chk = XRCCTRL(*(nb->GetPage(icons_page)), "check[0]", wxCheckBox);
+ if (chk)
+ event.Enable(chk->IsChecked());
+
+ // Let's create a log-window entry
+ static bool checked = true;
+ if (chk->IsChecked() != checked)
+ {
+ checked = chk->IsChecked();
+ wxLogMessage("Row one has been %s by check[0], XRCID = %i", checked ? "enabled" : "disabled", XRCID("check[0]"));
+ wxLogMessage("XRCIDs: first_row[start] = %i, first_row[0] = %i, first_row[1] = %i, first_row[2] = %i, first_row[end] = %i",
+ XRCID("first_row[start]"), XRCID("first_row[0]"), XRCID("first_row[1]"), XRCID("first_row[2]"), XRCID("first_row[end]"));
+ }
+}
+
+void ObjrefDialog::OnUpdateUISecond(wxUpdateUIEvent& event)
+{
+ // The checkbox with the XRCID 'check[1]' controls this row of icons
+ wxCheckBox *chk = XRCCTRL(*(nb->GetPage(icons_page)), "check[1]", wxCheckBox);
+ if (chk)
+ event.Enable(chk->IsChecked());
+
+ // Let's create a log-window entry
+ static bool checked = true;
+ if (chk->IsChecked() != checked)
+ {
+ checked = chk->IsChecked();
+ wxLogMessage("Row two has been %s by check[1], XRCID = %i", checked ? "enabled" : "disabled", XRCID("check[1]"));
+ wxLogMessage("XRCIDs: second_row[start] = %i, second_row[0] = %i, second_row[1] = %i, second_row[2] = %i, second_row[end] = %i",
+ XRCID("second_row[start]"), XRCID("second_row[0]"), XRCID("second_row[1]"), XRCID("second_row[2]"), XRCID("second_row[end]"));
+ }
+}
+
+void ObjrefDialog::OnUpdateUIThird(wxUpdateUIEvent& event)
+{
+ // The checkbox with the XRCID 'check[2]' controls this row of icons
+ wxCheckBox *chk = XRCCTRL(*(nb->GetPage(icons_page)), "check[2]", wxCheckBox);
+ if (chk)
+ event.Enable(chk->IsChecked());
+
+ // Let's create a log-window entry
+ static bool checked = true;
+ if (chk->IsChecked() != checked)
+ {
+ checked = chk->IsChecked();
+ wxLogMessage("Row three has been %s by check[2], XRCID = %i", checked ? "enabled" : "disabled", XRCID("check[2]"));
+ wxLogMessage("XRCIDs: third_row[start] = %i, third_row[0] = %i, third_row[1] = %i, third_row[2] = %i, third_row[end] = %i",
+ XRCID("third_row[start]"), XRCID("third_row[0]"), XRCID("third_row[1]"), XRCID("third_row[2]"), XRCID("third_row[end]"));
+ }
+}
+
+void ObjrefDialog::OnNumeralClick(wxCommandEvent& event)
+{
+ // See how the id range simplifies determining which numeral was clicked
+ int digit = event.GetId() - XRCID("digits[start]");
+
+ char c = '0' + digit;
+ if (current==0 && previous==0)
+ {
+ // We're just starting a calculation, so get rid of the placeholder '0'
+ result_txt->Clear();
+ }
+ else if (operator_expected == true)
+ {
+ // If we've just finished one calculation, and now a digit is entered, clear
+ ClearCalculator();
+ result_txt->Clear();
+ }
+ (*result_txt) << c;
+
+
+ current = current*10 + digit;
+
+ wxLogMessage("You clicked digits[%c], XRCID %i", c, event.GetId());
+}
+
+void ObjrefDialog::OnOperatorClick(wxCommandEvent& event)
+{
+ static const char symbols[] = "+-*/=";
+
+ operator_expected = false;
+ int ID = event.GetId() - XRCID("operators[start]");
+
+ // We carefully used "operators[end]" as the name of the Clear button
+ if (event.GetId() == XRCID("operators[end]"))
+ {
+ wxLogMessage("You clicked operators[%i], XRCID %i, 'Clear'", ID, event.GetId());
+ return ClearCalculator();
+ }
+
+ switch(ID)
+ {
+ case operator_plus:
+ case operator_minus:
+ case operator_multiply:
+ case operator_divide:
+ if (current!=0 || previous!=0)
+ {
+ // We're in the middle of a complex calculation, so do the first bit
+ Calculate();
+ }
+ curr_operator = (CalcOperator)ID;
+ break;
+
+ case operator_equals:
+ Calculate();
+ wxLogMessage("You clicked operators[%i], XRCID %i, giving a '%c'", ID, event.GetId(), symbols[ID]);
+ curr_operator = operator_equals;
+ // Flag that the next entry should be an operator, not a digit
+ operator_expected = true;
+ return;
+ }
+
+ (*result_txt) << ' ' << symbols[ID] << ' ';
+
+ wxLogMessage("You clicked operators[%i], XRCID %i, giving a '%c'", ID, event.GetId(), symbols[ID]);
+}
+
+void ObjrefDialog::Calculate()
+{
+ switch(curr_operator)
+ {
+ case operator_plus:
+ previous += current; break;
+ case operator_minus:
+ previous -= current; break;
+ case operator_multiply:
+ previous *= current; break;
+ case operator_divide:
+ if (current!=0)
+ previous /= current;
+ break;
+ default: return;
+ }
+
+ curr_operator = operator_plus;
+ current = 0;
+ result_txt->Clear();
+
+ (*result_txt) << previous;
+}
+
+void ObjrefDialog::ClearCalculator()
+{
+ current = previous = 0;
+ curr_operator = operator_plus;
+ operator_expected = false;
+ result_txt->ChangeValue("0");
+}
projects / wxWidgets.git / blobdiff