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better handle dragging mouse in single-line mode

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This commit is contained in:
Sean Barrett 2017-03-03 10:57:43 -08:00
parent 4de75eb0cc
commit d052909923
1 changed files with 21 additions and 1 deletions
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22
stb_textedit.h
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@ -441,6 +441,15 @@ static int stb_text_locate_coord(STB_TEXTEDIT_STRING *str, float x, float y)
// API click: on mouse down, move the cursor to the clicked location, and reset the selection
static void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
{
// In single-line mode, just always make y = 0. This lets the drag keep working if the mouse
// goes off the top or bottom of the text
if( state->single_line )
{
StbTexteditRow r;
STB_TEXTEDIT_LAYOUTROW(&r, str, 0);
y = r.ymin;
}
state->cursor = stb_text_locate_coord(str, x, y);
state->select_start = state->cursor;
state->select_end = state->cursor;
@ -450,7 +459,18 @@ static void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *stat
// API drag: on mouse drag, move the cursor and selection endpoint to the clicked location
static void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y)
{
int p = stb_text_locate_coord(str, x, y);
int p = 0;
// In single-line mode, just always make y = 0. This lets the drag keep working if the mouse
// goes off the top or bottom of the text
if( state->single_line )
{
StbTexteditRow r;
STB_TEXTEDIT_LAYOUTROW(&r, str, 0);
y = r.ymin;
}
p = stb_text_locate_coord(str, x, y);
state->cursor = state->select_end = p;
}