From 1fdea43c29a7a0ffb65ec8049da574d4198d22af Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Tue, 3 Dec 2019 19:37:51 +1100
Subject: Fix minor errors with text view margins for console/info editor

- Margins used duplicate define between files.
- Cursor selection ignored margins.
- Cursor wasn't scaling with DPI.

Add a 'draw_rect' member which is the region rect with margins applied
to make these checks clearer.

This resolves issue pointed out in D6300,
which complicated further refactoring.
---
 .../blender/editors/space_console/console_draw.c   | 40 ++++++++++++++--------
 1 file changed, 26 insertions(+), 14 deletions(-)

(limited to 'source/blender/editors/space_console/console_draw.c')

diff --git a/source/blender/editors/space_console/console_draw.c b/source/blender/editors/space_console/console_draw.c
index 4d6b05df609..02278934c20 100644
--- a/source/blender/editors/space_console/console_draw.c
+++ b/source/blender/editors/space_console/console_draw.c
@@ -80,8 +80,6 @@ void console_scrollback_prompt_end(struct SpaceConsole *sc, ConsoleLine *cl_dumm
   BLI_remlink(&sc->scrollback, cl_dummy);
 }
 
-#define CONSOLE_DRAW_MARGIN 4
-
 /* console textview callbacks */
 static int console_textview_begin(TextViewContext *tvc)
 {
@@ -150,7 +148,7 @@ static int console_textview_line_color(struct TextViewContext *tvc,
     const SpaceConsole *sc = (SpaceConsole *)tvc->arg1;
     const ConsoleLine *cl = (ConsoleLine *)sc->history.last;
     int offl = 0, offc = 0;
-    int xy[2] = {CONSOLE_DRAW_MARGIN, CONSOLE_DRAW_MARGIN};
+    int xy[2] = {tvc->draw_rect.xmin, tvc->draw_rect.ymin};
     int pen[2];
     GPUVertFormat *format = immVertexFormat();
     uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
@@ -169,9 +167,9 @@ static int console_textview_line_color(struct TextViewContext *tvc,
     immUniformThemeColor(TH_CONSOLE_CURSOR);
 
     immRectf(pos,
-             (xy[0] + pen[0]) - 1,
+             (xy[0] + pen[0]) - U.pixelsize,
              (xy[1] + pen[1]),
-             (xy[0] + pen[0]) + 1,
+             (xy[0] + pen[0]) + U.pixelsize,
              (xy[1] + pen[1] + tvc->lheight));
 
     immUnbindProgram();
@@ -187,8 +185,22 @@ static void console_textview_const_colors(TextViewContext *UNUSED(tvc), unsigned
   UI_GetThemeColor4ubv(TH_CONSOLE_SELECT, bg_sel);
 }
 
-static int console_textview_main__internal(
-    struct SpaceConsole *sc, ARegion *ar, int draw, int mval[2], void **mouse_pick, int *pos_pick)
+static void console_textview_draw_rect_calc(const ARegion *ar, rcti *draw_rect)
+{
+  const int margin = 4 * UI_DPI_FAC;
+  draw_rect->xmin = margin;
+  draw_rect->xmax = ar->winx - (margin + V2D_SCROLL_WIDTH);
+  draw_rect->ymin = margin;
+  /* No margin at the top (allow text to scroll off the window). */
+  draw_rect->ymax = ar->winy;
+}
+
+static int console_textview_main__internal(struct SpaceConsole *sc,
+                                           ARegion *ar,
+                                           int draw,
+                                           const int mval[2],
+                                           void **mouse_pick,
+                                           int *pos_pick)
 {
   ConsoleLine cl_dummy = {NULL};
   int ret = 0;
@@ -214,7 +226,8 @@ static int console_textview_main__internal(
   tvc.lheight = sc->lheight * UI_DPI_FAC;
   tvc.ymin = v2d->cur.ymin;
   tvc.ymax = v2d->cur.ymax;
-  tvc.winx = ar->winx - V2D_SCROLL_WIDTH;
+
+  console_textview_draw_rect_calc(ar, &tvc.draw_rect);
 
   console_scrollback_prompt_begin(sc, &cl_dummy);
   ret = textview_draw(&tvc, draw, mval, mouse_pick, pos_pick);
@@ -225,13 +238,13 @@ static int console_textview_main__internal(
 
 void console_textview_main(struct SpaceConsole *sc, ARegion *ar)
 {
-  int mval[2] = {INT_MAX, INT_MAX};
+  const int mval[2] = {INT_MAX, INT_MAX};
   console_textview_main__internal(sc, ar, 1, mval, NULL, NULL);
 }
 
 int console_textview_height(struct SpaceConsole *sc, ARegion *ar)
 {
-  int mval[2] = {INT_MAX, INT_MAX};
+  const int mval[2] = {INT_MAX, INT_MAX};
   return console_textview_main__internal(sc, ar, 0, mval, NULL, NULL);
 }
 
@@ -239,11 +252,10 @@ int console_char_pick(struct SpaceConsole *sc, ARegion *ar, const int mval[2])
 {
   int pos_pick = 0;
   void *mouse_pick = NULL;
-  int mval_clamp[2];
 
-  mval_clamp[0] = CLAMPIS(mval[0], CONSOLE_DRAW_MARGIN, ar->winx - CONSOLE_DRAW_MARGIN);
-  mval_clamp[1] = CLAMPIS(mval[1], CONSOLE_DRAW_MARGIN, ar->winy - CONSOLE_DRAW_MARGIN);
+  rcti draw_rect;
+  console_textview_draw_rect_calc(ar, &draw_rect);
 
-  console_textview_main__internal(sc, ar, 0, mval_clamp, &mouse_pick, &pos_pick);
+  console_textview_main__internal(sc, ar, 0, mval, &mouse_pick, &pos_pick);
   return pos_pick;
 }
-- 
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