scintillagtk.cxx.svn-base

Notepad++ is a generic source code editor (it tries to be anyway) and Notepad replacement written in

// Scintilla source code edit control
// ScintillaGTK.cxx - GTK+ specific subclass of ScintillaBase
// Copyright 1998-2004 by Neil Hodgson <[e-mail]>
// The License.txt file describes the conditions under which this software may be distributed.

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <time.h>

#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>

#include "Platform.h"

#if PLAT_GTK_WIN32
#include "Windows.h"
#endif

#include "Scintilla.h"
#include "ScintillaWidget.h"
#ifdef SCI_LEXER
#include "SciLexer.h"
#include "PropSet.h"
#include "Accessor.h"
#include "KeyWords.h"
#endif
#include "ContractionState.h"
#include "SVector.h"
#include "SplitVector.h"
#include "Partitioning.h"
#include "CellBuffer.h"
#include "CallTip.h"
#include "KeyMap.h"
#include "Indicator.h"
#include "XPM.h"
#include "LineMarker.h"
#include "Style.h"
#include "AutoComplete.h"
#include "ViewStyle.h"
#include "CharClassify.h"
#include "Document.h"
#include "Editor.h"
#include "SString.h"
#include "ScintillaBase.h"
#include "UniConversion.h"

#include "gtk/gtksignal.h"
#include "gtk/gtkmarshal.h"
#if GLIB_MAJOR_VERSION >= 2
#include "scintilla-marshal.h"
#endif

#ifdef SCI_LEXER
#include <glib.h>
#include <gmodule.h>
#include "ExternalLexer.h"
#endif

#define INTERNATIONAL_INPUT

#if !PLAT_GTK_WIN32 || GTK_MAJOR_VERSION >= 2
#define USE_CONVERTER
#endif

#ifdef USE_CONVERTER
#include "Converter.h"
#endif

#ifdef _MSC_VER
// Constant conditional expressions are because of GTK+ headers
#pragma warning(disable: 4127)
// Ignore unreferenced local functions in GTK+ headers
#pragma warning(disable: 4505)
#endif

#if GTK_CHECK_VERSION(2,2,0)
#define USE_GTK_CLIPBOARD
#endif

#if GLIB_MAJOR_VERSION < 2
#define OBJECT_CLASS GtkObjectClass
#else
#define OBJECT_CLASS GObjectClass
#endif

extern char *UTF8FromLatin1(const char *s, int &len);

class ScintillaGTK : public ScintillaBase {
	_ScintillaObject *sci;
	Window wText;
	Window scrollbarv;
	Window scrollbarh;
	GtkObject *adjustmentv;
	GtkObject *adjustmenth;
	int scrollBarWidth;
	int scrollBarHeight;

	// Because clipboard access is asynchronous, copyText is created by Copy
#ifndef USE_GTK_CLIPBOARD
	SelectionText copyText;
#endif

	SelectionText primary;

	GdkEventButton evbtn;
	bool capturedMouse;
	bool dragWasDropped;
	int lastKey;

	GtkWidgetClass *parentClass;

	static GdkAtom atomClipboard;
	static GdkAtom atomUTF8;
	static GdkAtom atomString;
	static GdkAtom atomUriList;
	static GdkAtom atomDROPFILES_DND;
	GdkAtom atomSought;

#if PLAT_GTK_WIN32
	CLIPFORMAT cfColumnSelect;
#endif

#ifdef INTERNATIONAL_INPUT
#if GTK_MAJOR_VERSION < 2
	// Input context used for supporting internationalized key entry
	GdkIC *ic;
	GdkICAttr *ic_attr;
#else
	Window wPreedit;
	Window wPreeditDraw;
	GtkIMContext *im_context;
#endif
#endif

	// Wheel mouse support
	unsigned int linesPerScroll;
	GTimeVal lastWheelMouseTime;
	gint lastWheelMouseDirection;
	gint wheelMouseIntensity;

	GdkRegion *rgnUpdate;

	// Private so ScintillaGTK objects can not be copied
	ScintillaGTK(const ScintillaGTK &) : ScintillaBase() {}
	ScintillaGTK &operator=(const ScintillaGTK &) { return * this; }

public:
	ScintillaGTK(_ScintillaObject *sci_);
	virtual ~ScintillaGTK();
	static void ClassInit(OBJECT_CLASS* object_class, GtkWidgetClass *widget_class, GtkContainerClass *container_class);
private:
	virtual void Initialise();
	virtual void Finalise();
	virtual void DisplayCursor(Window::Cursor c);
	virtual void StartDrag();
	int TargetAsUTF8(char *text);
	int EncodedFromUTF8(char *utf8, char *encoded);
	virtual bool ValidCodePage(int codePage) const;
public: 	// Public for scintilla_send_message
	virtual sptr_t WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
private:
	virtual sptr_t DefWndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam);
	virtual void SetTicking(bool on);
	virtual bool SetIdle(bool on);
	virtual void SetMouseCapture(bool on);
	virtual bool HaveMouseCapture();
	virtual bool PaintContains(PRectangle rc);
	void FullPaint();
	virtual PRectangle GetClientRectangle();
	void SyncPaint(PRectangle rc);
	virtual void ScrollText(int linesToMove);
	virtual void SetVerticalScrollPos();
	virtual void SetHorizontalScrollPos();
	virtual bool ModifyScrollBars(int nMax, int nPage);
	void ReconfigureScrollBars();
	virtual void NotifyChange();
	virtual void NotifyFocus(bool focus);
	virtual void NotifyParent(SCNotification scn);
	void NotifyKey(int key, int modifiers);
	void NotifyURIDropped(const char *list);
	const char *CharacterSetID() const;
	virtual int KeyDefault(int key, int modifiers);
	virtual void CopyToClipboard(const SelectionText &selectedText);
	virtual void Copy();
	virtual void Paste();
	virtual void CreateCallTipWindow(PRectangle rc);
	virtual void AddToPopUp(const char *label, int cmd = 0, bool enabled = true);
	bool OwnPrimarySelection();
	virtual void ClaimSelection();
	void GetGtkSelectionText(GtkSelectionData *selectionData, SelectionText &selText);
	void ReceivedSelection(GtkSelectionData *selection_data);
	void ReceivedDrop(GtkSelectionData *selection_data);
	static void GetSelection(GtkSelectionData *selection_data, guint info, SelectionText *selected);
#ifdef USE_GTK_CLIPBOARD
	static void ClipboardGetSelection(GtkClipboard* clip, GtkSelectionData *selection_data, guint info, void *data);
	static void ClipboardClearSelection(GtkClipboard* clip, void *data);
#endif

	void UnclaimSelection(GdkEventSelection *selection_event);
	void Resize(int width, int height);

	// Callback functions
	void RealizeThis(GtkWidget *widget);
	static void Realize(GtkWidget *widget);
	void UnRealizeThis(GtkWidget *widget);
	static void UnRealize(GtkWidget *widget);
	void MapThis();
	static void Map(GtkWidget *widget);
	void UnMapThis();
	static void UnMap(GtkWidget *widget);
	static gint CursorMoved(GtkWidget *widget, int xoffset, int yoffset, ScintillaGTK *sciThis);
	static gint FocusIn(GtkWidget *widget, GdkEventFocus *event);
	static gint FocusOut(GtkWidget *widget, GdkEventFocus *event);
	static void SizeRequest(GtkWidget *widget, GtkRequisition *requisition);
	static void SizeAllocate(GtkWidget *widget, GtkAllocation *allocation);
	gint Expose(GtkWidget *widget, GdkEventExpose *ose);
	static gint ExposeMain(GtkWidget *widget, GdkEventExpose *ose);
	static void Draw(GtkWidget *widget, GdkRectangle *area);
	void ForAll(GtkCallback callback, gpointer callback_data);
	static void MainForAll(GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data);

	static void ScrollSignal(GtkAdjustment *adj, ScintillaGTK *sciThis);
	static void ScrollHSignal(GtkAdjustment *adj, ScintillaGTK *sciThis);
	gint PressThis(GdkEventButton *event);
	static gint Press(GtkWidget *widget, GdkEventButton *event);
	static gint MouseRelease(GtkWidget *widget, GdkEventButton *event);
#if PLAT_GTK_WIN32 || (GTK_MAJOR_VERSION >= 2)
	static gint ScrollEvent(GtkWidget *widget, GdkEventScroll *event);
#endif
	static gint Motion(GtkWidget *widget, GdkEventMotion *event);
	gboolean KeyThis(GdkEventKey *event);
	static gboolean KeyPress(GtkWidget *widget, GdkEventKey *event);
	static gboolean KeyRelease(GtkWidget *widget, GdkEventKey *event);
#if GTK_MAJOR_VERSION >= 2
	static gboolean ExposePreedit(GtkWidget *widget, GdkEventExpose *ose, ScintillaGTK *sciThis);
	gboolean ExposePreeditThis(GtkWidget *widget, GdkEventExpose *ose);
	static void Commit(GtkIMContext *context, char *str, ScintillaGTK *sciThis);
	void CommitThis(char *str);
	static void PreeditChanged(GtkIMContext *context, ScintillaGTK *sciThis);
	void PreeditChangedThis();
#endif
	static gint StyleSetText(GtkWidget *widget, GtkStyle *previous, void*);
	static gint RealizeText(GtkWidget *widget, void*);
#if GLIB_MAJOR_VERSION < 2
	static void Destroy(GtkObject *object);
#else
	static void Destroy(GObject *object);
#endif
	static void SelectionReceived(GtkWidget *widget, GtkSelectionData *selection_data,
	                              guint time);
	static void SelectionGet(GtkWidget *widget, GtkSelectionData *selection_data,
	                         guint info, guint time);
	static gint SelectionClear(GtkWidget *widget, GdkEventSelection *selection_event);
#if GTK_MAJOR_VERSION < 2
	static gint SelectionNotify(GtkWidget *widget, GdkEventSelection *selection_event);
#endif
	static void DragBegin(GtkWidget *widget, GdkDragContext *context);
	static gboolean DragMotion(GtkWidget *widget, GdkDragContext *context,
	                           gint x, gint y, guint time);
	static void DragLeave(GtkWidget *widget, GdkDragContext *context,
	                      guint time);
	static void DragEnd(GtkWidget *widget, GdkDragContext *context);
	static gboolean Drop(GtkWidget *widget, GdkDragContext *context,
	                     gint x, gint y, guint time);
	static void DragDataReceived(GtkWidget *widget, GdkDragContext *context,
	                             gint x, gint y, GtkSelectionData *selection_data, guint info, guint time);
	static void DragDataGet(GtkWidget *widget, GdkDragContext *context,
	                        GtkSelectionData *selection_data, guint info, guint time);
	static gint TimeOut(ScintillaGTK *sciThis);
	static gint IdleCallback(ScintillaGTK *sciThis);
	static void PopUpCB(ScintillaGTK *sciThis, guint action, GtkWidget *widget);

	gint ExposeTextThis(GtkWidget *widget, GdkEventExpose *ose);
	static gint ExposeText(GtkWidget *widget, GdkEventExpose *ose, ScintillaGTK *sciThis);

	static gint ExposeCT(GtkWidget *widget, GdkEventExpose *ose, CallTip *ct);
	static gint PressCT(GtkWidget *widget, GdkEventButton *event, ScintillaGTK *sciThis);

	static sptr_t DirectFunction(ScintillaGTK *sciThis,
	                             unsigned int iMessage, uptr_t wParam, sptr_t lParam);
};

enum {
    COMMAND_SIGNAL,
    NOTIFY_SIGNAL,
    LAST_SIGNAL
};

static gint scintilla_signals[LAST_SIGNAL] = { 0 };
#if GLIB_MAJOR_VERSION < 2
static GtkWidgetClass *parent_class = NULL;
#endif

enum {
    TARGET_STRING,
    TARGET_TEXT,
    TARGET_COMPOUND_TEXT,
    TARGET_UTF8_STRING,
    TARGET_URI
};

GdkAtom ScintillaGTK::atomClipboard = 0;
GdkAtom ScintillaGTK::atomUTF8 = 0;
GdkAtom ScintillaGTK::atomString = 0;
GdkAtom ScintillaGTK::atomUriList = 0;
GdkAtom ScintillaGTK::atomDROPFILES_DND = 0;

static const GtkTargetEntry clipboardTargets[] = {
	{ "text/uri-list", 0, TARGET_URI },
	{ "UTF8_STRING", 0, TARGET_UTF8_STRING },
	{ "STRING", 0, TARGET_STRING },
};
static const gint nClipboardTargets = sizeof(clipboardTargets) / sizeof(clipboardTargets[0]);

static GtkWidget *PWidget(Window &w) {
	return reinterpret_cast<GtkWidget *>(w.GetID());
}

static ScintillaGTK *ScintillaFromWidget(GtkWidget *widget) {
	ScintillaObject *scio = reinterpret_cast<ScintillaObject *>(widget);
	return reinterpret_cast<ScintillaGTK *>(scio->pscin);
}

ScintillaGTK::ScintillaGTK(_ScintillaObject *sci_) :
		adjustmentv(0), adjustmenth(0),
		scrollBarWidth(30), scrollBarHeight(30),
		capturedMouse(false), dragWasDropped(false),
		lastKey(0), parentClass(0),
#ifdef INTERNATIONAL_INPUT
#if GTK_MAJOR_VERSION < 2
		ic(NULL),
		ic_attr(NULL),
#else
		im_context(NULL),
#endif
#endif
		lastWheelMouseDirection(0),
		wheelMouseIntensity(0),
		rgnUpdate(0) {
	sci = sci_;
	wMain = GTK_WIDGET(sci);

#if PLAT_GTK_WIN32
 	// There does not seem to be a real standard for indicating that the clipboard
	// contains a rectangular selection, so copy Developer Studio.
	cfColumnSelect = static_cast<CLIPFORMAT>(
		::RegisterClipboardFormat("MSDEVColumnSelect"));

  	// Get intellimouse parameters when running on win32; otherwise use
	// reasonable default
#ifndef SPI_GETWHEELSCROLLLINES
#define SPI_GETWHEELSCROLLLINES   104
#endif
	::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &linesPerScroll, 0);
#else
	linesPerScroll = 4;
#endif
	lastWheelMouseTime.tv_sec = 0;
	lastWheelMouseTime.tv_usec = 0;

	Initialise();
}

ScintillaGTK::~ScintillaGTK() {
}

void ScintillaGTK::RealizeThis(GtkWidget *widget) {
	//Platform::DebugPrintf("ScintillaGTK::realize this\n");
	GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED);
	GdkWindowAttr attrs;
	attrs.window_type = GDK_WINDOW_CHILD;
	attrs.x = widget->allocation.x;
	attrs.y = widget->allocation.y;
	attrs.width = widget->allocation.width;
	attrs.height = widget->allocation.height;
	attrs.wclass = GDK_INPUT_OUTPUT;
	attrs.visual = gtk_widget_get_visual(widget);
	attrs.colormap = gtk_widget_get_colormap(widget);
	attrs.event_mask = gtk_widget_get_events(widget) | GDK_EXPOSURE_MASK;
	GdkCursor *cursor = gdk_cursor_new(GDK_XTERM);
	attrs.cursor = cursor;
	widget->window = gdk_window_new(gtk_widget_get_parent_window(widget), &attrs,
	                                GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP | GDK_WA_CURSOR);
	gdk_window_set_user_data(widget->window, widget);
	gdk_window_set_background(widget->window, &widget->style->bg[GTK_STATE_NORMAL]);
	gdk_window_show(widget->window);
	gdk_cursor_destroy(cursor);
	widget->style = gtk_style_attach(widget->style, widget->window);
#ifdef INTERNATIONAL_INPUT
#if GTK_MAJOR_VERSION < 2
	if (gdk_im_ready() && (ic_attr = gdk_ic_attr_new()) != NULL) {
		gint width, height;
		GdkColormap *colormap;
		GdkEventMask mask;
		GdkICAttr *attr = ic_attr;
		GdkICAttributesType attrmask = GDK_IC_ALL_REQ;