dynamic keyframes, textbox rework, andrea ffmpeg.opts, perpetual chkpt undo, lv2...

[goodguy/history.git] / cinelerra-5.1 / guicast / bctextbox.C

diff --git a/cinelerra-5.1/guicast/bctextbox.C b/cinelerra-5.1/guicast/bctextbox.C
index 8de77f4f01d755a50f6404d92b4c485ab526cf0f..e2af4cbe2a05e5166c3128bc03b994767553a47d 100644 (file)
--- a/cinelerra-5.1/guicast/bctextbox.C
+++ b/cinelerra-5.1/guicast/bctextbox.C
@@ -51,9 +51,9 @@ BC_TextBox::BC_TextBox(int x, int y, int w, int rows,
        is_utf8 = 1;
        skip_cursor = 0;
        reset_parameters(rows, has_border, font, size);
-       if( size > 0 )
+       if( size >= 0 )
                tstrcpy(text);
-       else    // text referenced directly
+       else    // reference shared directly
                this->text = text;
 }
 
@@ -63,12 +63,9 @@ BC_TextBox::BC_TextBox(int x, int y, int w, int rows,
 {
        is_utf8 = 1;
        skip_cursor = 0;
-       wsize = size > 0 ? size : wcslen(wtext);
-       if( size <= 0 ) size = 2*wsize;
        reset_parameters(rows, has_border, font, size);
-       this->wtext = new wchar_t[wsize+1];
+       wdemand(wcslen(wtext));
        wcsncpy(this->wtext, wtext, wsize);
-       this->wtext[wsize] = 0;
 }
 
 BC_TextBox::BC_TextBox(int x, int y, int w, int rows,
@@ -136,7 +133,7 @@ BC_TextBox::~BC_TextBox()
        delete suggestions;
        delete menu;
        delete [] wtext;
-       if( size > 0 )
+       if( size >= 0 )
                delete [] text;
 }
 
@@ -149,9 +146,11 @@ int BC_TextBox::reset_parameters(int rows, int has_border, int font, int size)
        this->rows = rows;
        this->has_border = has_border;
        this->font = font;
+// size > 0: fixed buffer, size == 0: dynamic buffer
+// size < 0: fixed shared buffer via set_text
        this->size = size;
        this->tsize = size >= 0 ? size : -size;
-       this->text = size > 0 ? new char[size+1] : 0;
+       this->text = size > 0 ? new char[this->tsize+1] : 0;
        if( this->text ) this->text[0] = 0;
        text_start = 0;
        text_end = 0;
@@ -187,14 +186,12 @@ int BC_TextBox::reset_parameters(int rows, int has_border, int font, int size)
 
 int BC_TextBox::tstrlen()
 {
-       if( !tsize ) return strlen(text);
-       return strnlen(text, tsize);
+       return !text ? 0 : strnlen(text, tsize);
 }
 
 int BC_TextBox::tstrcmp(const char *cp)
 {
        const char *tp = get_text();
-       if( !tsize ) return strcmp(tp, cp);
        return strncmp(tp, cp, tsize);
 }
 
@@ -202,12 +199,10 @@ char *BC_TextBox::tstrcpy(const char *cp)
 {
        dirty = 1;
        if( cp ) {
-               if( !tsize )
-                       return strcpy(text, cp);
+               if( !size ) tdemand(strlen(cp));
                strncpy(text, cp, tsize);
-               text[tsize-1] = 0;
        }
-       else
+       else if( text )
                text[0] = 0;
        return text;
 }
@@ -215,9 +210,8 @@ char *BC_TextBox::tstrcpy(const char *cp)
 char *BC_TextBox::tstrcat(const char *cp)
 {
        dirty = 1;
-       if( !tsize ) return strcat(text, cp);
+       if( !size ) tdemand(tstrlen() + strlen(cp));
        char *result = strncat(text, cp, tsize);
-       text[tsize-1] = 0;
        return result;
 }
 
@@ -226,13 +220,10 @@ int BC_TextBox::wtext_update()
        if( dirty ) {
                const char *src_enc = is_utf8 ? "UTF8" : BC_Resources::encoding;
                const char *dst_enc = BC_Resources::wide_encoding;
-               int nsize = tsize > 0 ? tsize : strlen(text) + BCTEXTLEN;
-               if( nsize > wsize || !wtext ) {
-                       wchar_t *ntext = new wchar_t[nsize+1];
-                       memcpy(ntext, wtext, wsize*sizeof(wtext[0]));
-                       delete [] wtext;  wtext = ntext;  wsize = nsize;
-               }
-               wlen = BC_Resources::encode(src_enc, dst_enc, text, strlen(text),
+               int tlen = tstrlen();
+               int nsize = tsize > 0 ? tsize : tlen + BCTEXTLEN;
+               wdemand(nsize);
+               wlen = BC_Resources::encode(src_enc, dst_enc, text, tlen,
                        (char*)wtext, wsize*sizeof(wchar_t)) / sizeof(wchar_t);
                dirty = 0;
        }
@@ -472,9 +463,9 @@ int BC_TextBox::update(const char *text)
 int BC_TextBox::update(const wchar_t *wtext)
 {
        int wtext_len = wcslen(wtext);
-       if( wtext_len >= wsize ) wtext_len = wsize;
-       wcsncpy(this->wtext, wtext, wtext_len);
-       wlen = wtext_len;
+       wdemand(wtext_len);
+       wcsncpy(this->wtext, wtext, wsize);
+       this->wlen = wtext_len;
        if(highlight_letter1 > wtext_len) highlight_letter1 = wtext_len;
        if(highlight_letter2 > wtext_len) highlight_letter2 = wtext_len;
        if(ibeam_letter > wtext_len) ibeam_letter = wtext_len;
@@ -558,13 +549,14 @@ const wchar_t* BC_TextBox::get_wtext()
 
 void BC_TextBox::set_text(char *text, int isz)
 {
-       if( size > 0 || isz < 0 ) return;
-       this->text = text;
-       tsize = isz;
-       size = -isz;
-       dirty = 1;
-       wtext_update();
-       draw(1);
+       if( size < 0 && isz > 0 ) {
+               this->text = text;
+               tsize = isz;
+               size = -isz;
+               dirty = 1;
+               wtext_update();
+               draw(1);
+       }
 }
 
 int BC_TextBox::get_text_rows()
@@ -652,7 +644,7 @@ void BC_TextBox::draw_cursor()
 
 void BC_TextBox::draw(int flush)
 {
-       int i, j, k;
+       int i, k;
        int row_begin, row_end;
        int highlight_x1, highlight_x2;
        int need_ibeam = 1;
@@ -669,11 +661,11 @@ void BC_TextBox::draw(int flush)
 // Draw text with selection
        set_font(font);
 
-       for(i=0, j=0, k=text_y; i < wtext_len && k < get_h(); k += text_height) {
+       for(i=0, k=text_y; i < wtext_len && k < get_h(); k += text_height) {
 // Draw row of text
                row_begin = i;
                wchar_t *wtext_row = &wtext[i];
-               for(j=0; j<BCTEXTLEN-1 && i<wtext_len && wtext[i]!='\n'; ++i, ++j);
+               for( ; i<wtext_len && wtext[i]!='\n'; ++i );
                if( (row_end=i) < wtext_len ) ++i;
 
                if(k > top_margin-text_height && k < get_h()-bottom_margin) {
@@ -1741,10 +1733,34 @@ void BC_TextBox::delete_selection(int letter1, int letter2, int wtext_len)
        do_separators(1);
 }
 
+int BC_TextBox::wdemand(int len)
+{
+       if( wtext && wsize >= len ) return 0;
+       int nsize = len + wlen/2 + BCTEXTLEN;
+       wchar_t *ntext = new wchar_t[nsize+1];
+       ntext[nsize] = 0;
+       memcpy(ntext, wtext, wsize*sizeof(wtext[0]));
+       delete [] wtext;  wtext = ntext;  wsize = nsize;
+       return 1;
+}
+
+int BC_TextBox::tdemand(int len)
+{
+       if( text && tsize >= len ) return 0;
+       int tlen = !text ? 0 : strlen(text);
+       int nsize = len + tlen/2 + BCTEXTLEN;
+       char *ntext = new char[nsize+1];
+       ntext[nsize] = 0;
+       memcpy(ntext, text, tsize*sizeof(text[0]));
+       delete [] text;  text = ntext;  tsize = nsize;
+       return 1;
+}
+
 void BC_TextBox::insert_text(const wchar_t *wcp, int len)
 {
        if( len < 0 ) len = wcslen(wcp);
        int wtext_len = wtext_update();
+       wdemand(wtext_len + len + 1);
        if( unicode_active < 0 && highlight_letter1 < highlight_letter2 ) {
                delete_selection(highlight_letter1, highlight_letter2, wtext_len);
                highlight_letter2 = ibeam_letter = highlight_letter1;
@@ -1752,15 +1768,11 @@ void BC_TextBox::insert_text(const wchar_t *wcp, int len)
        }
 
        int i, j;
-       for(i=wtext_len-1, j=wtext_len+len-1; i>=ibeam_letter; i--, j--) {
-               if( j >= wsize ) continue;
-               wtext[j] = wtext[i];
-       }
+       for( i=wtext_len, j=wtext_len+len; --i>=ibeam_letter; )
+               if( --j < wsize ) wtext[j] = wtext[i];
+       for( i=ibeam_letter,j=0; j<len; ++i, ++j )
+               if( i < wsize ) wtext[i] = wcp[j];
 
-       for(i = ibeam_letter, j = 0; j < len; j++, i++) {
-               if( i >= wsize ) break;
-               wtext[i] = wcp[j];
-       }
        if( (wlen+=len) > wsize ) wlen = wsize;
        if( (ibeam_letter+=len) > wsize ) ibeam_letter = wsize;
        wtext[wlen] = 0;  // wtext allocated wsize+1