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author | hobbs <hobbs> | 2006-10-31 01:42:25 (GMT) |
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committer | hobbs <hobbs> | 2006-10-31 01:42:25 (GMT) |
commit | 397a2c9832bf618f26be267501cf49ab06a562ec (patch) | |
tree | 61d5e957eccfcba57b0dd27ebc73db085385834e /generic/ttk/ttkTrack.c | |
parent | 18d330543869e240c2bd12fc9fbb8d5027f5cad6 (diff) | |
download | tk-397a2c9832bf618f26be267501cf49ab06a562ec.zip tk-397a2c9832bf618f26be267501cf49ab06a562ec.tar.gz tk-397a2c9832bf618f26be267501cf49ab06a562ec.tar.bz2 |
* doc/ttk_Geometry.3, doc/ttk_Theme.3, doc/ttk_button.n:
* doc/ttk_checkbutton.n, doc/ttk_combobox.n, doc/ttk_dialog.n:
* doc/ttk_entry.n, doc/ttk_frame.n, doc/ttk_image.n:
* doc/ttk_intro.n, doc/ttk_label.n, doc/ttk_labelframe.n:
* doc/ttk_menubutton.n, doc/ttk_notebook.n, doc/ttk_panedwindow.n:
* doc/ttk_progressbar.n, doc/ttk_radiobutton.n, doc/ttk_scrollbar.n:
* doc/ttk_separator.n, doc/ttk_sizegrip.n, doc/ttk_style.n:
* doc/ttk_treeview.n, doc/ttk_widget.n,:
* generic/ttk/ttk.decls, generic/ttk/ttkBlink.c:
* generic/ttk/ttkButton.c, generic/ttk/ttkCache.c:
* generic/ttk/ttkClamTheme.c, generic/ttk/ttkClassicTheme.c:
* generic/ttk/ttkDecls.h, generic/ttk/ttkDefaultTheme.c:
* generic/ttk/ttkElements.c, generic/ttk/ttkEntry.c:
* generic/ttk/ttkFrame.c, generic/ttk/ttkImage.c:
* generic/ttk/ttkInit.c, generic/ttk/ttkLabel.c:
* generic/ttk/ttkLayout.c, generic/ttk/ttkManager.c:
* generic/ttk/ttkManager.h, generic/ttk/ttkNotebook.c:
* generic/ttk/ttkPanedwindow.c, generic/ttk/ttkProgress.c:
* generic/ttk/ttkScale.c, generic/ttk/ttkScroll.c:
* generic/ttk/ttkScrollbar.c, generic/ttk/ttkSeparator.c:
* generic/ttk/ttkSquare.c, generic/ttk/ttkState.c:
* generic/ttk/ttkStubInit.c, generic/ttk/ttkStubLib.c:
* generic/ttk/ttkTagSet.c, generic/ttk/ttkTheme.c:
* generic/ttk/ttkTheme.h, generic/ttk/ttkThemeInt.h:
* generic/ttk/ttkTrace.c, generic/ttk/ttkTrack.c:
* generic/ttk/ttkTreeview.c, generic/ttk/ttkWidget.c:
* generic/ttk/ttkWidget.h:
* library/demos/ttk_demo.tcl, library/demos/ttk_iconlib.tcl:
* library/demos/ttk_repeater.tcl:
* library/ttk/altTheme.tcl, library/ttk/aquaTheme.tcl:
* library/ttk/button.tcl, library/ttk/clamTheme.tcl:
* library/ttk/classicTheme.tcl, library/ttk/combobox.tcl:
* library/ttk/cursors.tcl, library/ttk/defaults.tcl:
* library/ttk/dialog.tcl, library/ttk/entry.tcl:
* library/ttk/fonts.tcl, library/ttk/icons.tcl:
* library/ttk/keynav.tcl, library/ttk/menubutton.tcl:
* library/ttk/notebook.tcl, library/ttk/panedwindow.tcl:
* library/ttk/progress.tcl, library/ttk/scale.tcl:
* library/ttk/scrollbar.tcl, library/ttk/sizegrip.tcl:
* library/ttk/treeview.tcl, library/ttk/ttk.tcl:
* library/ttk/utils.tcl, library/ttk/winTheme.tcl:
* library/ttk/xpTheme.tcl:
* macosx/ttkMacOSXTheme.c:
* tests/ttk/all.tcl, tests/ttk/bwidget.test, tests/ttk/combobox.test:
* tests/ttk/entry.test, tests/ttk/image.test:
* tests/ttk/labelframe.test, tests/ttk/layout.test:
* tests/ttk/misc.test, tests/ttk/notebook.test:
* tests/ttk/panedwindow.test, tests/ttk/progressbar.test:
* tests/ttk/scrollbar.test, tests/ttk/treetags.test:
* tests/ttk/treeview.test, tests/ttk/ttk.test, tests/ttk/validate.test:
* win/ttkWinMonitor.c, win/ttkWinTheme.c, win/ttkWinXPTheme.c:
First import of Ttk themed Tk widgets as branched from tile 0.7.8
* generic/tkInt.h, generic/tkWindow.c: add Ttk_Init call, copy
tk classic widgets to ::tk namespace.
* library/tk.tcl: add source of ttk/ttk.tcl, define $::ttk::library.
* unix/Makefile.in, win/Makefile.in: add Ttk build bits
* win/configure, win/configure.in: check for uxtheme.h (XP theme).
Diffstat (limited to 'generic/ttk/ttkTrack.c')
-rw-r--r-- | generic/ttk/ttkTrack.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/generic/ttk/ttkTrack.c b/generic/ttk/ttkTrack.c new file mode 100644 index 0000000..4a6337e --- /dev/null +++ b/generic/ttk/ttkTrack.c @@ -0,0 +1,175 @@ +/* $Id: ttkTrack.c,v 1.1 2006/10/31 01:42:26 hobbs Exp $ + * Copyright (c) 2004, Joe English + * + * TrackElementState() -- helper routine for widgets + * like scrollbars in which individual elements may + * be active or pressed instead of the widget as a whole. + * + * Usage: + * TrackElementState(&recordPtr->core); + * + * Registers an event handler on the widget that tracks pointer + * events and updates the state of the element under the + * mouse cursor. + * + * The "active" element is the one under the mouse cursor, + * and is normally set to the ACTIVE state unless another element + * is currently being pressed. + * + * The active element becomes "pressed" on <ButtonPress> events, + * and remains "active" and "pressed" until the corresponding + * <ButtonRelease> event. + * + * TODO: Handle "chords" properly (e.g., <B1-ButtonPress-2>) + * TODO: Deal with grabs -- possible to get a Press event w/no corresponding Release. + * + */ + +#include <tk.h> +#include "ttkTheme.h" +#include "ttkWidget.h" + +typedef struct +{ + WidgetCore *corePtr; /* Widget to track */ + Ttk_LayoutNode *activeElement; /* element under the mouse cursor */ + Ttk_LayoutNode *pressedElement; /* currently pressed element */ +} ElementStateTracker; + +/* + * ActivateElement(es, node) -- + * Make 'node' the active element if non-NULL. + * Deactivates the currently active element if different. + * + * The active element has TTK_STATE_ACTIVE set _unless_ + * another element is 'pressed' + */ +static void ActivateElement(ElementStateTracker *es, Ttk_LayoutNode *node) +{ + if (es->activeElement == node) { + /* No change */ + return; + } + + if (!es->pressedElement) { + if (es->activeElement) { + /* Deactivate old element */ + Ttk_ChangeElementState(es->activeElement, 0,TTK_STATE_ACTIVE); + } + if (node) { + /* Activate new element */ + Ttk_ChangeElementState(node, TTK_STATE_ACTIVE,0); + } + TtkRedisplayWidget(es->corePtr); + } + + es->activeElement = node; +} + +/* ReleaseElement -- + * Releases the currently pressed element, if any. + */ +static void ReleaseElement(ElementStateTracker *es) +{ + if (!es->pressedElement) + return; + + Ttk_ChangeElementState( + es->pressedElement, 0,TTK_STATE_PRESSED|TTK_STATE_ACTIVE); + es->pressedElement = 0; + + /* Reactivate element under the mouse cursor: + */ + if (es->activeElement) + Ttk_ChangeElementState(es->activeElement, TTK_STATE_ACTIVE,0); + + TtkRedisplayWidget(es->corePtr); +} + +/* PressElement -- + * Presses the specified element. + */ +static void PressElement(ElementStateTracker *es, Ttk_LayoutNode *node) +{ + if (es->pressedElement) { + ReleaseElement(es); + } + + if (node) { + Ttk_ChangeElementState( + node, TTK_STATE_PRESSED|TTK_STATE_ACTIVE, 0); + } + + es->pressedElement = node; + TtkRedisplayWidget(es->corePtr); +} + +/* ElementStateEventProc -- + * Event handler for tracking element states. + */ + +static const unsigned ElementStateMask = + ButtonPressMask + | ButtonReleaseMask + | PointerMotionMask + | LeaveWindowMask + | EnterWindowMask + | StructureNotifyMask + ; + +static void +ElementStateEventProc(ClientData clientData, XEvent *ev) +{ + ElementStateTracker *es = (ElementStateTracker *)clientData; + Ttk_LayoutNode *node; + + switch (ev->type) + { + case MotionNotify : + node = Ttk_LayoutIdentify( + es->corePtr->layout,ev->xmotion.x,ev->xmotion.y); + ActivateElement(es, node); + break; + case LeaveNotify: + ActivateElement(es, 0); + break; + case EnterNotify: + node = Ttk_LayoutIdentify( + es->corePtr->layout,ev->xcrossing.x,ev->xcrossing.y); + ActivateElement(es, node); + break; + case ButtonPress: + node = Ttk_LayoutIdentify( + es->corePtr->layout, ev->xbutton.x, ev->xbutton.y); + if (node) + PressElement(es, node); + break; + case ButtonRelease: + ReleaseElement(es); + break; + case DestroyNotify: + /* Unregister this event handler and free client data. + */ + Tk_DeleteEventHandler(es->corePtr->tkwin, + ElementStateMask, ElementStateEventProc, es); + ckfree((ClientData)es); + break; + } +} + +/* + * TrackElementState -- + * Register an event handler to manage the 'pressed' + * and 'active' states of individual widget elements. + */ + +void TrackElementState(WidgetCore *corePtr) +{ + ElementStateTracker *es = (ElementStateTracker*)ckalloc(sizeof(*es)); + es->corePtr = corePtr; + es->activeElement = es->pressedElement = 0; + Tk_CreateEventHandler(corePtr->tkwin, + ElementStateMask,ElementStateEventProc,es); +} + + |