mirror of https://github.com/fltk/fltk
Added text selection and copy/paste to Fl_Help_View. Text can be selected by clicking and dragging the mouse over text. After releasing the mouse button, a stripped down ASCII text is in the text clipboard. Press Ctrl-C to copy the text into the main clipboard. Pressing Ctrl-A selects all text.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5205 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Matthias Melcher
parent
ec8ab0f22d
commit
b51dd39f07
1
CHANGES
1
CHANGES
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@ -1,5 +1,6 @@
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CHANGES IN FLTK 1.1.8
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- Added text selection and copy to Fl_Help_View.
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- Fixed position of popup menu titles (STR #1322)
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- Showing any window will disable the current tooltip
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so it won't pop over menus (STR #1321)
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@ -158,7 +158,15 @@ class FL_EXPORT Fl_Help_View : public Fl_Group //// Help viewer widget
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fl_font(f = fonts_[nfonts_][0],
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s = fonts_[nfonts_][1]); }
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public:
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void hv_draw(const char *t, int x, int y);
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char begin_selection();
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char extend_selection();
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void end_selection(int c=0);
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void clear_global_selection();
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Fl_Help_Link *find_link(int, int);
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void follow_link(Fl_Help_Link*);
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public:
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Fl_Help_View(int xx, int yy, int ww, int hh, const char *l = 0);
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~Fl_Help_View();
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@ -186,6 +194,8 @@ class FL_EXPORT Fl_Help_View : public Fl_Group //// Help viewer widget
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int leftline() const { return (leftline_); }
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void value(const char *v);
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const char *value() const { return (value_); }
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void clear_selection();
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void select_all();
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};
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#endif // !Fl_Help_View_H
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@ -55,6 +55,7 @@
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//
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#include <FL/Fl_Help_View.H>
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#include <FL/Fl_Window.H>
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#include <FL/Fl_Pixmap.H>
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#include <stdio.h>
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#include <stdlib.h>
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@ -136,6 +137,96 @@ static const char *broken_xpm[] =
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static Fl_Pixmap broken_image(broken_xpm);
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//
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// All the stuff needed to implement text selection in Fl_Help_View
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//
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/* matt:
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* We are trying to keep binary compatibility with previous versions
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* of FLTK. This means that we are limited to adding static variables
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* only to not enlarge the Fl_Help_View class. Lucky for us, only one
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* text can be selected system wide, so we can remember the selection
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* in a single set of variables.
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*
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* Still to do:
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* - The viewer flickers like crazy when redrawing. The window should be
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* Fl_Double_Window, but is that binary compatible?
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* - We should not draw anything when counting (draw_mode>0). That would
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* improve performance a lot
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* - &word; style characters mess up our count inside a word boundary
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* - we can only select words, no individual characters
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* - no dragging of the selection into another widget
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* - selection must be cleared if another widget get focus!
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* - write a comment for every new function
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*/
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/*
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The following functions are also used to draw stuff and should be replaced with
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local copies that are much faster when merely counting:
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fl_color(Fl_Color);
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fl_rectf(int, int, int, int);
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fl_push_clip(int, int, int, int);
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fl_xyline(int, int, int);
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fl_rect()
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fl_line()
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img->draw()
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*/
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static int selection_first = 0;
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static int selection_last = 0;
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static int selection_push_first = 0;
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static int selection_push_last = 0;
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static int selection_drag_first = 0;
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static int selection_drag_last = 0;
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static int selected = 0;
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static int draw_mode = 0;
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static int mouse_x = 0;
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static int mouse_y = 0;
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static int current_pos = 0;
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static int clicked_link = 0;
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static Fl_Help_View *current_view = 0L;
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Fl_Color hv_selection_color;
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Fl_Color hv_selection_text_color;
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/*
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* Limitation: if a word contains &code; notations, we will calculate a wrong length.
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*
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* This function must be optimized for speed!
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*/
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void Fl_Help_View::hv_draw(const char *t, int x, int y)
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{
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if (selected && current_view==this && current_pos<selection_last && current_pos>=selection_first) {
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Fl_Color c = fl_color();
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fl_color(hv_selection_color);
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int w = fl_width(t);
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if (current_pos+strlen(t)<selection_last)
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w += fl_width(' ');
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fl_rectf(x, y+fl_descent()-fl_height(), w, fl_height());
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fl_color(hv_selection_text_color);
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fl_draw(t, x, y);
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fl_color(c);
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} else {
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fl_draw(t, x, y);
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}
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if (draw_mode) {
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int w = fl_width(t);
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if (mouse_x>=x && mouse_x<x+w) {
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if (mouse_y>=y-fl_height()+fl_descent()&&mouse_y<=y+fl_descent()) {
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int f = current_pos;
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int l = f+strlen(t); // use 'quote_char' to calculate the true length of the HTML string
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if (draw_mode==1) {
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selection_push_first = f;
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selection_push_last = l;
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} else {
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selection_drag_first = f;
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selection_drag_last = l;
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}
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}
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}
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}
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}
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//
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// 'Fl_Help_View::add_block()' - Add a text block to the list.
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@ -363,6 +454,12 @@ Fl_Help_View::draw()
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if (!value_)
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return;
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if (current_view==this && selected) {
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hv_selection_color = FL_SELECTION_COLOR;
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hv_selection_text_color = fl_contrast(textcolor_, FL_SELECTION_COLOR);
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}
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// Clip the drawing to the inside of the box...
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fl_push_clip(x() + Fl::box_dx(b), y() + Fl::box_dy(b),
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ww - Fl::box_dw(b), hh - Fl::box_dh(b));
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@ -406,12 +503,13 @@ Fl_Help_View::draw()
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hh = 0;
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}
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fl_draw(buf, xx + x() - leftline_, yy + y());
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hv_draw(buf, xx + x() - leftline_, yy + y());
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if (underline) {
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xtra_ww = isspace((*ptr)&255)?(int)fl_width(' '):0;
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fl_xyline(xx + x() - leftline_, yy + y() + 1,
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xx + x() - leftline_ + ww + xtra_ww);
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}
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current_pos = ptr-value_;
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xx += ww;
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if ((fsize + 2) > hh)
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@ -428,11 +526,12 @@ Fl_Help_View::draw()
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*s = '\0';
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s = buf;
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fl_draw(buf, xx + x() - leftline_, yy + y());
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hv_draw(buf, xx + x() - leftline_, yy + y());
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if (underline) fl_xyline(xx + x() - leftline_, yy + y() + 1,
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xx + x() - leftline_ +
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(int)fl_width(buf));
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current_pos = ptr-value_;
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if (line < 31)
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line ++;
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xx = block->line[line];
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@ -459,11 +558,12 @@ Fl_Help_View::draw()
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*s = '\0';
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s = buf;
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fl_draw(buf, xx + x() - leftline_, yy + y());
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hv_draw(buf, xx + x() - leftline_, yy + y());
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ww = (int)fl_width(buf);
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if (underline) fl_xyline(xx + x() - leftline_, yy + y() + 1,
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xx + x() - leftline_ + ww);
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xx += ww;
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current_pos = ptr-value_;
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}
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needspace = 0;
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@ -474,6 +574,7 @@ Fl_Help_View::draw()
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while (isspace((*ptr)&255))
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ptr ++;
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current_pos = ptr-value_;
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}
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}
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@ -510,6 +611,8 @@ Fl_Help_View::draw()
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if (*ptr == '>')
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ptr ++;
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// end of command reached, set the supposed start of printed eord here
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current_pos = ptr-value_;
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if (strcasecmp(buf, "HEAD") == 0)
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head = 1;
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else if (strcasecmp(buf, "BR") == 0)
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@ -568,10 +671,10 @@ Fl_Help_View::draw()
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{
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#ifdef __APPLE_QUARTZ__
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fl_font(FL_SYMBOL, fsize);
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fl_draw("\245", xx - fsize + x() - leftline_, yy + y());
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hv_draw("\245", xx - fsize + x() - leftline_, yy + y());
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#else
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fl_font(FL_SYMBOL, fsize);
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fl_draw("\267", xx - fsize + x() - leftline_, yy + y());
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hv_draw("\267", xx - fsize + x() - leftline_, yy + y());
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#endif
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}
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@ -755,7 +858,7 @@ Fl_Help_View::draw()
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*s = '\0';
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s = buf;
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fl_draw(buf, xx + x() - leftline_, yy + y());
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hv_draw(buf, xx + x() - leftline_, yy + y());
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if (line < 31)
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line ++;
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@ -765,6 +868,7 @@ Fl_Help_View::draw()
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needspace = 0;
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ptr ++;
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current_pos = ptr-value_;
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}
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else if (isspace((*ptr)&255))
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{
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@ -781,6 +885,7 @@ Fl_Help_View::draw()
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}
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ptr ++;
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if (!pre) current_pos = ptr-value_;
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needspace = 1;
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}
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else if (*ptr == '&')
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@ -829,13 +934,21 @@ Fl_Help_View::draw()
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if (s > buf && !head)
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{
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fl_draw(buf, xx + x() - leftline_, yy + y());
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hv_draw(buf, xx + x() - leftline_, yy + y());
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if (underline) fl_xyline(xx + x() - leftline_, yy + y() + 1,
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xx + x() - leftline_ + ww);
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current_pos = ptr-value_;
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}
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}
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fl_pop_clip();
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if (Fl::focus()==this) {
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ww = w() ;
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hh = h();
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if (hscrollbar_.visible()) hh -= 18;
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if (scrollbar_.visible()) ww -= 18;
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draw_focus(box(), x(), y(), ww, hh);
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}
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}
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@ -2363,6 +2476,235 @@ Fl_Help_View::get_length(const char *l) { // I - Value
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}
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Fl_Help_Link *Fl_Help_View::find_link(int xx, int yy)
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{
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int i;
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Fl_Help_Link *linkp;
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for (i = nlinks_, linkp = links_; i > 0; i --, linkp ++) {
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if (xx >= linkp->x && xx < linkp->w &&
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yy >= linkp->y && yy < linkp->h)
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break;
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}
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return i ? linkp : 0L;
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}
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void Fl_Help_View::follow_link(Fl_Help_Link *linkp)
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{
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char target[32]; // Current target
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clear_selection();
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strlcpy(target, linkp->name, sizeof(target));
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set_changed();
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if (strcmp(linkp->filename, filename_) != 0 && linkp->filename[0])
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{
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char dir[1024]; // Current directory
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char temp[1024], // Temporary filename
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*tempptr; // Pointer into temporary filename
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if (strchr(directory_, ':') != NULL &&
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strchr(linkp->filename, ':') == NULL)
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{
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if (linkp->filename[0] == '/')
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{
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strlcpy(temp, directory_, sizeof(temp));
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if ((tempptr = strrchr(strchr(directory_, ':') + 3, '/')) != NULL)
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strlcpy(tempptr, linkp->filename, sizeof(temp));
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else
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strlcat(temp, linkp->filename, sizeof(temp));
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}
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else
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snprintf(temp, sizeof(temp), "%s/%s", directory_, linkp->filename);
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}
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else if (linkp->filename[0] != '/' && strchr(linkp->filename, ':') == NULL)
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{
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if (directory_[0])
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snprintf(temp, sizeof(temp), "%s/%s", directory_, linkp->filename);
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else
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{
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getcwd(dir, sizeof(dir));
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snprintf(temp, sizeof(temp), "file:%s/%s", dir, linkp->filename);
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}
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}
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else
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strlcpy(temp, linkp->filename, sizeof(temp));
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if (linkp->name[0])
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snprintf(temp + strlen(temp), sizeof(temp) - strlen(temp), "#%s",
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linkp->name);
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load(temp);
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}
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else if (target[0])
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topline(target);
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else
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topline(0);
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leftline(0);
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}
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void Fl_Help_View::clear_selection()
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{
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if (current_view==this)
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clear_global_selection();
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}
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void Fl_Help_View::select_all()
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{
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clear_global_selection();
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if (!value_) return;
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current_view = this;
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selection_drag_last = selection_last = strlen(value_);
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selected = 1;
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}
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void Fl_Help_View::clear_global_selection()
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{
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if (selected) redraw();
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selection_push_first = selection_push_last = 0;
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selection_drag_first = selection_drag_last = 0;
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selection_first = selection_last = 0;
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selected = 0;
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}
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char Fl_Help_View::begin_selection()
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{
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clear_global_selection();
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mouse_x = Fl::event_x(); mouse_y = Fl::event_y();
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draw_mode = 1;
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current_view = this;
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window()->make_current();
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draw();
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draw_mode = 0;
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if (selection_push_last) return 1;
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return 0;
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}
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char Fl_Help_View::extend_selection()
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{
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if (Fl::event_is_click())
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return 0;
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selected = 1;
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int sf = selection_first, sl = selection_last;
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mouse_x = Fl::event_x(); mouse_y = Fl::event_y();
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draw_mode = 2;
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window()->make_current();
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draw();
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draw_mode = 0;
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if (selection_push_first < selection_drag_first)
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selection_first = selection_push_first; else selection_first = selection_drag_first;
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if (selection_push_last > selection_drag_last)
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selection_last = selection_push_last; else selection_last = selection_drag_last;
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if (sf!=selection_first || sl!=selection_last)
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return 1;
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return 1;
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}
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// convert a command with up to four letters into an unsigned int
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static unsigned int command(const char *cmd)
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{
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unsigned int ret = (tolower(cmd[0])<<24);
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char c = cmd[1];
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if (c=='>' || c==' ' || c==0) return ret;
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ret |= (tolower(c)<<16);
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c = cmd[2];
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if (c=='>' || c==' ' || c==0) return ret;
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ret |= (tolower(c)<<8);
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c = cmd[3];
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if (c=='>' || c==' ' || c==0) return ret;
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ret |= tolower(c);
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c = cmd[4];
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if (c=='>' || c==' ' || c==0) return ret;
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return 0;
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}
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#define CMD(a, b, c, d) ((a<<24)|(b<<16)|(c<<8)|d)
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void Fl_Help_View::end_selection(int clipboard)
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{
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if (!selected || current_view!=this)
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return;
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// convert the select part of our html text into some kind of somewhat readable ASCII
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// and store it in the selection buffer
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char p = 0, pre = 0;;
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int len = strlen(value_), nc;
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char *txt = (char*)malloc(len+1), *d = txt;
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const char *s = value_, *cmd, *src;
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for (;;) {
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char c = *s++;
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if (c==0) break;
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if (c=='<') { // begin of some html command. Skip until we find a '>'
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cmd = s;
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for (;;) {
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c = *s++;
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if (c==0 || c=='>') break;
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}
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if (c==0) break;
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// do something with this command... .
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// the replacement string must not be longer that the command itself plus '<' and '>'
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src = 0;
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switch (command(cmd)) {
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case CMD('p','r','e', 0 ): pre = 1; break;
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case CMD('/','p','r','e'): pre = 0; break;
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case CMD('t','d', 0 , 0 ):
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case CMD('p', 0 , 0 , 0 ):
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case CMD('/','p', 0 , 0 ):
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case CMD('b','r', 0 , 0 ): src = "\n"; break;
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case CMD('l','i', 0 , 0 ): src = "\n * "; break;
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case CMD('/','h','1', 0 ):
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case CMD('/','h','2', 0 ):
|
||||
case CMD('/','h','3', 0 ):
|
||||
case CMD('/','h','4', 0 ):
|
||||
case CMD('/','h','5', 0 ):
|
||||
case CMD('/','h','6', 0 ): src = "\n\n"; break;
|
||||
case CMD('t','r', 0 , 0 ):
|
||||
case CMD('h','1', 0 , 0 ):
|
||||
case CMD('h','2', 0 , 0 ):
|
||||
case CMD('h','3', 0 , 0 ):
|
||||
case CMD('h','4', 0 , 0 ):
|
||||
case CMD('h','5', 0 , 0 ):
|
||||
case CMD('h','6', 0 , 0 ): src = "\n\n"; break;
|
||||
case CMD('d','t', 0 , 0 ): src = "\n "; break;
|
||||
case CMD('d','d', 0 , 0 ): src = "\n - "; break;
|
||||
}
|
||||
int n = s-value_;
|
||||
if (src && n>selection_first && n<=selection_last) {
|
||||
while (*src) {
|
||||
*d++ = *src++;
|
||||
}
|
||||
c = src[-1];
|
||||
p = isspace(c) ? ' ' : c;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
if (c=='&') { // special characters
|
||||
int xx = quote_char(s);
|
||||
if (xx>=0) {
|
||||
c = (char)xx;
|
||||
for (;;) {
|
||||
char cc = *s++;
|
||||
if (!cc || cc==';') break;
|
||||
}
|
||||
}
|
||||
}
|
||||
int n = s-value_;
|
||||
if (n>selection_first && n<=selection_last) {
|
||||
if (!pre && isspace(c)) c = ' ';
|
||||
if (p!=' '||c!=' ')
|
||||
*d++ = c;
|
||||
p = c;
|
||||
}
|
||||
}
|
||||
*d = 0;
|
||||
Fl::copy(txt, strlen(txt), clipboard);
|
||||
free(txt);
|
||||
}
|
||||
|
||||
#define ctrl(x) ((x)&0x1f)
|
||||
|
||||
//
|
||||
// 'Fl_Help_View::handle()' - Handle events in the widget.
|
||||
//
|
||||
|
|
@ -2370,106 +2712,97 @@ Fl_Help_View::get_length(const char *l) { // I - Value
|
|||
int // O - 1 if we handled it, 0 otherwise
|
||||
Fl_Help_View::handle(int event) // I - Event to handle
|
||||
{
|
||||
int i; // Looping var
|
||||
int xx, yy; // Adjusted mouse position
|
||||
Fl_Help_Link *linkp; // Current link
|
||||
char target[32]; // Current target
|
||||
static Fl_Help_Link *linkp; // currently clicked link
|
||||
|
||||
int xx = Fl::event_x() - x() + leftline_;
|
||||
int yy = Fl::event_y() - y() + topline_;
|
||||
|
||||
switch (event)
|
||||
{
|
||||
case FL_PUSH :
|
||||
if (Fl_Group::handle(event))
|
||||
return (1);
|
||||
|
||||
case FL_MOVE :
|
||||
xx = Fl::event_x() - x() + leftline_;
|
||||
yy = Fl::event_y() - y() + topline_;
|
||||
break;
|
||||
|
||||
case FL_FOCUS:
|
||||
redraw();
|
||||
return 1;
|
||||
case FL_UNFOCUS:
|
||||
clear_selection();
|
||||
redraw();
|
||||
return 1;
|
||||
case FL_ENTER :
|
||||
Fl_Group::handle(event);
|
||||
return 1;
|
||||
case FL_LEAVE :
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
|
||||
default :
|
||||
return (Fl_Group::handle(event));
|
||||
}
|
||||
|
||||
// Handle mouse clicks on links...
|
||||
for (i = nlinks_, linkp = links_; i > 0; i --, linkp ++)
|
||||
if (xx >= linkp->x && xx < linkp->w &&
|
||||
yy >= linkp->y && yy < linkp->h)
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
break;
|
||||
|
||||
if (!i)
|
||||
{
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
return (1);
|
||||
}
|
||||
|
||||
// Change the cursor for FL_MOTION events, and go to the link for
|
||||
// clicks...
|
||||
if (event == FL_MOVE)
|
||||
fl_cursor(FL_CURSOR_HAND);
|
||||
else
|
||||
{
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
|
||||
strlcpy(target, linkp->name, sizeof(target));
|
||||
|
||||
set_changed();
|
||||
|
||||
if (strcmp(linkp->filename, filename_) != 0 && linkp->filename[0])
|
||||
{
|
||||
char dir[1024]; // Current directory
|
||||
char temp[1024], // Temporary filename
|
||||
*tempptr; // Pointer into temporary filename
|
||||
|
||||
|
||||
if (strchr(directory_, ':') != NULL &&
|
||||
strchr(linkp->filename, ':') == NULL)
|
||||
{
|
||||
if (linkp->filename[0] == '/')
|
||||
{
|
||||
strlcpy(temp, directory_, sizeof(temp));
|
||||
if ((tempptr = strrchr(strchr(directory_, ':') + 3, '/')) != NULL)
|
||||
strlcpy(tempptr, linkp->filename, sizeof(temp));
|
||||
else
|
||||
strlcat(temp, linkp->filename, sizeof(temp));
|
||||
}
|
||||
else
|
||||
snprintf(temp, sizeof(temp), "%s/%s", directory_, linkp->filename);
|
||||
}
|
||||
else if (linkp->filename[0] != '/' && strchr(linkp->filename, ':') == NULL)
|
||||
{
|
||||
if (directory_[0])
|
||||
snprintf(temp, sizeof(temp), "%s/%s", directory_, linkp->filename);
|
||||
else
|
||||
{
|
||||
getcwd(dir, sizeof(dir));
|
||||
snprintf(temp, sizeof(temp), "file:%s/%s", dir, linkp->filename);
|
||||
}
|
||||
}
|
||||
case FL_MOVE:
|
||||
if (Fl_Group::handle(event))
|
||||
return 1;
|
||||
if (find_link(xx, yy))
|
||||
fl_cursor(FL_CURSOR_HAND);
|
||||
else
|
||||
strlcpy(temp, linkp->filename, sizeof(temp));
|
||||
|
||||
if (linkp->name[0])
|
||||
snprintf(temp + strlen(temp), sizeof(temp) - strlen(temp), "#%s",
|
||||
linkp->name);
|
||||
|
||||
load(temp);
|
||||
}
|
||||
else if (target[0])
|
||||
topline(target);
|
||||
else
|
||||
topline(0);
|
||||
|
||||
leftline(0);
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
return 1;
|
||||
case FL_PUSH:
|
||||
if (Fl::focus() != this) {
|
||||
Fl::focus(this);
|
||||
handle(FL_FOCUS);
|
||||
}
|
||||
if (Fl_Group::handle(event))
|
||||
return 1;
|
||||
linkp = find_link(xx, yy);
|
||||
if (linkp) {
|
||||
fl_cursor(FL_CURSOR_HAND);
|
||||
return 1;
|
||||
}
|
||||
if (begin_selection()) {
|
||||
fl_cursor(FL_CURSOR_INSERT);
|
||||
return 1;
|
||||
}
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
return 1;
|
||||
case FL_DRAG:
|
||||
if (linkp) {
|
||||
if (Fl::event_is_click()) {
|
||||
fl_cursor(FL_CURSOR_HAND);
|
||||
} else {
|
||||
fl_cursor(FL_CURSOR_DEFAULT); // should be "FL_CURSOR_CANCEL" if we had it
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
if (current_view==this && selection_push_last) {
|
||||
if (extend_selection()) {
|
||||
redraw();
|
||||
}
|
||||
fl_cursor(FL_CURSOR_INSERT);
|
||||
return 1;
|
||||
}
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
return 1;
|
||||
case FL_RELEASE:
|
||||
if (linkp) {
|
||||
fl_cursor(FL_CURSOR_DEFAULT);
|
||||
if (Fl::event_is_click()) {
|
||||
follow_link(linkp);
|
||||
}
|
||||
linkp = 0;
|
||||
return 1;
|
||||
}
|
||||
if (current_view==this && selection_push_last) {
|
||||
end_selection();
|
||||
return 1;
|
||||
}
|
||||
return 1;
|
||||
case FL_SHORTCUT: {
|
||||
char ascii = Fl::event_text()[0];
|
||||
fprintf(stderr, "%02x %c\n", ascii, ascii);
|
||||
switch (ascii) {
|
||||
case ctrl('A'): select_all(); redraw(); return 1;
|
||||
case ctrl('X'): end_selection(1); return 1;
|
||||
case ctrl('C'): end_selection(1); return 1;
|
||||
}
|
||||
break; }
|
||||
}
|
||||
|
||||
return (1);
|
||||
return (Fl_Group::handle(event));
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'Fl_Help_View::Fl_Help_View()' - Build a Fl_Help_View widget.
|
||||
//
|
||||
|
|
@ -2567,6 +2900,8 @@ Fl_Help_View::load(const char *f)// I - Filename to load (may also have target)
|
|||
char newname[1024]; // New filename buffer
|
||||
|
||||
|
||||
clear_selection();
|
||||
|
||||
strlcpy(newname, f, sizeof(newname));
|
||||
if ((target = strrchr(newname, '#')) != NULL)
|
||||
*target++ = '\0';
|
||||
|
|
@ -2753,6 +3088,8 @@ Fl_Help_View::leftline(int l) // I - Left position
|
|||
void
|
||||
Fl_Help_View::value(const char *v) // I - Text to view
|
||||
{
|
||||
clear_selection();
|
||||
|
||||
if (!v)
|
||||
return;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue