summaryrefslogtreecommitdiff
path: root/gui/history.c
blob: c2728e36049c09b12a4682b5fdf87bbb2541d4ba (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
/*
 * gui/history.c - Revision history (navigation)
 *
 * Written 2016 by Werner Almesberger
 * Copyright 2016 by Werner Almesberger
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#include <stddef.h>
#include <stdbool.h>
#include <stdlib.h>

#include <gtk/gtk.h>

#include "misc/util.h"
#include "file/git-hist.h"
#include "gui/fmt-pango.h"
#include "gui/style.h"
#include "gui/aoi.h"
#include "gui/over.h"
#include "gui/input.h"
#include "gui/common.h"


static void hide_history(struct gui_ctx *ctx)
{
	input_pop();

	ctx->showing_history = 0;
	do_revision_overlays(ctx);
	redraw(ctx);
}


static void set_history_style(struct gui_hist *h, bool current)
{
	struct gui_ctx *ctx = h->ctx;
	struct overlay_style style = overlay_style_dense;
	const struct gui_hist *new = ctx->new_hist;
	const struct gui_hist *old = ctx->old_hist;

	/* this is in addition to showing detailed content */
	if (current)
		style.width++;

	switch (ctx->selecting) {
	case sel_only:
		style.frame = COLOR(FRAME_SEL_ONLY);
		break;
	case sel_old:
		style.frame = COLOR(FRAME_SEL_OLD);
		break;
	case sel_new:
		style.frame = COLOR(FRAME_SEL_NEW);
		break;
	default:
		abort();
	}

	if (ctx->new_hist == h || ctx->old_hist == h) {
		style.width++;
		style.font = BOLD_FONT;
	}
	if (ctx->old_hist) {
		if (h == new)
			style.bg = COLOR(BG_NEW);
		if (h == old)
			style.bg = COLOR(BG_OLD);
	}

	if (h->identical)
		style.fg = RGBA(0.5, 0.5, 0.5, 1);
	if (!h->sheets)
		style.fg = RGBA(0.7, 0.0, 0.0, 1);

	overlay_style(h->over, &style);
}


static bool hover_history(void *user, bool on)
{
	struct gui_hist *h = user;
	struct gui_ctx *ctx = h->ctx;
	char *s;

	if (on) {
		s = vcs_git_long_for_pango(h->vcs_hist, fmt_pango);
		overlay_text_raw(h->over, s);
		free(s);
	} else {
		overlay_text(h->over, "<small>%s</small>",
		    vcs_git_summary(h->vcs_hist));
	}
	set_history_style(h, on);
	redraw(ctx);
	return 1;
}


static void click_history(void *user)
{
	struct gui_hist *h = user;
	struct gui_ctx *ctx = h->ctx;
	struct gui_sheet *sheet;

	hide_history(ctx);

	if (!h->sheets)
		return;

	sheet = find_corresponding_sheet(h->sheets,
	    ctx->new_hist->sheets, ctx->curr_sheet);

	switch (ctx->selecting) {
	case sel_only:
		ctx->old_hist = ctx->new_hist;
		ctx->new_hist = h;
		break;
	case sel_new:
		ctx->new_hist = h;
		break;
	case sel_old:
		ctx->old_hist = h;
		break;
	default:
		abort();
	}

	if (ctx->new_hist->age > ctx->old_hist->age) {
		swap(ctx->new_hist, ctx->old_hist);
		if (ctx->selecting == sel_old)
			go_to_sheet(ctx, sheet);
		else
			render_delta(ctx);
	} else {
		if (ctx->selecting != sel_old)
			go_to_sheet(ctx, sheet);
		else
			render_delta(ctx);
	}

	if (ctx->old_hist == ctx->new_hist)
		ctx->old_hist = NULL;

	do_revision_overlays(ctx);
	redraw(ctx);
}


static void ignore_click(void *user)
{
}


static struct gui_hist *skip_history(struct gui_ctx *ctx, struct gui_hist *h)
{
	struct overlay_style style = overlay_style_dense;
	unsigned n;

	/* don't skip the first entry */
	if (h == ctx->hist)
		return h;

	/* need at least two entries */
	if (!h->identical || !h->next || !h->next->identical)
		return h;

	/* don't skip the last entry */
	for (n = 0; h->next && h->identical; h = h->next)
		n++;

	h->over = overlay_add(&ctx->hist_overlays, &ctx->aois,
	    NULL, ignore_click, h);
	overlay_text(h->over, "<small>%u commits without changes</small>", n);

	style.width = 0;
	style.pad = 0;
	style.bg = RGBA(1.0, 1.0, 1.0, 0.8);
	overlay_style(h->over, &style);

	return h;
}


/* ----- Input ------------------------------------------------------------- */


static bool history_click(void *user, int x, int y)
{
	struct gui_ctx *ctx = user;

	if (aoi_click(ctx->aois, x, y))
		return 1;
	hide_history(ctx);
	return 1;
}


static bool history_hover_update(void *user, int x, int y)
{
	struct gui_ctx *ctx = user;

	return aoi_hover(ctx->aois, x, y);
}


static void history_drag_move(void *user, int dx, int dy)
{
	struct gui_ctx *ctx = user;

	ctx->hist_y_offset += dy;
	redraw(ctx);
}


static void history_key(void *user, int x, int y, int keyval)
{
	switch (keyval) {
	case GDK_KEY_q:
		gtk_main_quit();
	}
}


static const struct input_ops history_input_ops = {
	.click		= history_click,
	.hover_begin	= history_hover_update,
	.hover_update	= history_hover_update,
	.hover_click	= history_click,
	.drag_begin	= input_accept,
	.drag_move	= history_drag_move,
	.key		= history_key,
};


/* ----- Invocation -------------------------------------------------------- */


void show_history(struct gui_ctx *ctx, enum selecting sel)
{
	struct gui_hist *h = ctx->hist;

	input_push(&history_input_ops, ctx);

	ctx->showing_history = 1;
	ctx->hist_y_offset = 0;
	ctx->selecting = sel;
	overlay_remove_all(&ctx->hist_overlays);
	for (h = ctx->hist; h; h = h->next) {
		h = skip_history(ctx, h);
		h->over = overlay_add(&ctx->hist_overlays, &ctx->aois,
		    hover_history, click_history, h);
		hover_history(h, 0);
		set_history_style(h, 0);
	}
	redraw(ctx);
}